A pin reading "I had an abortion" is pictured on a backpack during a protest against the verdict restricting abortion rights in Warsaw, Poland, January 28, 2021. REUTERS/Aleksandra Szmigiel

A man on touring skis carries his daughter's skis on his backpack to ski on the snowy mountains in the Valle di Susa while resorts remain closed due to coronavirus disease (COVID-19) restrictions, in Cesana, Italy, January 24, 2021. REUTERS/Giuliano Berti

A scooter driver of mobile app toters puts a delivery inside a courier's backpack, during a lockdown and a 24-hour curfew to curb the spread of the coronavirus disease (COVID-19) in Beirut, Lebanon January 20, 2021. REUTERS/Mohamed Azakir

A member of the National Guard removes his backpack from a tour bus, which are being used to transport groups of guards to different locations ahead of U.S. President-elect Joe Biden's Presidential Inauguration in Washington, U.S., January 19, 2021. REUTERS/Caitlin Ochs

A person rides a bike down a street in downtown with a placard in a backpack reading "Justice for Casey Goodson" as people protest in reaction to the death of Goodson, a 23-year-old Black man who was killed by police last week as he entered his home, in Columbus, Ohio, U.S., December 11, 2020. REUTERS/Seth Herald

A performer reaches for a backpack while lying underneath a metal frame covered with a sheet representing the national flag, during a demonstration against Congress and for a change in the country's constitution, in Lima, Peru November 21, 2020. REUTERS/Sebastian Castaneda TPX IMAGES OF THE DAY

A woman carries a backpack as she walks near rickshaws in Dansha town in Tigray Region, Ethiopia November 9, 2020. REUTERS/Tiksa Negeri

Backpacks are on display in a sport shop, as the coronavirus disease (COVID-19) outbreak continues, in Soelden, Austria, October 16, 2020. REUTERS/Leonhard Foeger

Backpacks are on display in a sport shop, as the coronavirus disease (COVID-19) outbreak continues, in Soelden, Austria, October 16, 2020. REUTERS/Leonhard Foeger

A kid hangs her backpack on the chair in a classroom at Thomaz Rodrigues Alckmin school, on the first day of the return of Sao Paulo state's schools for extracurricular activities amid the the coronavirus disease (COVID-19) outbreak in Sao Paulo, Brazil October 7, 2020. REUTERS/Amanda Perobelli

A person holds a cellphone while a police officer pulls the backpack of a demonstrator taking part in a sitting blockade during an Extinction Rebellion protest, in Berlin, Germany October 5, 2020. REUTERS/Michele Tantussi

Fathers put backpacks on their daughters' shoulders before they enter school, after provincial government allowed reopening both primary and lower secondary classes amid the coronavirus disease (COVID-19) pandemic, in Karachi, Pakistan September 28, 2020. REUTERS/Akhtar Soomro

Kindergarten teacher Princess Bryant and one of her new students, five year-old Aryanee Cruz, look through the backpack off school supplies Cruz picked up before the first day of classes in the new school year at the Tynan Elementary School in Boston, Massachusetts, U.S., September 18, 2020. Bryant will begin the school year teaching classes virtually from her classroom because of the coronavirus disease (COVID-19) pandemic. REUTERS/Brian Snyder

Children carrying backpacks are seen on a road in Yuexi county, during a government-organised media tour in Liangshan Yi Autonomous Prefecture, Sichuan province, China September 11, 2020. Picture taken September 11, 2020. REUTERS/Tingshu Wang

A pro-independence protester wears an Estelada (the Catalan pro-independence flag) backpack as she they attends a socially distanced rally during Catalonia's day of 'La Diada' in Barcelona, Spain, September 11, 2020. REUTERS/Nacho Doce

A man covers himself with a backpack as he runs past a burning car during a protest following a march organised by lawyer organisations to demand justice on the killing of lawyer and President of the Bar of Lawyers of Port-au-Prince Monferrier Dorval, in the streets of Port-au-Prince, Haiti September 3, 2020. REUTERS/Andres Martinez Casares

A woman stands outside a backpackers lodge in trendy Long Street, normally bustling with foreign tourists, as coronavirus disease (COVID-19) lockdown regulations ease in Cape Town, South Africa, August 23, 2020. Picture taken August 23, 2020. REUTERS/Mike Hutchings

A woman carries pet birds in a backpack while overlooking the ocean at Coogee Beach as the state of New South Wales continues to report low numbers for new daily cases of the coronavirus disease (COVID-19), in Sydney, Australia, August 25, 2020. REUTERS/Loren Elliott

A woman carries pet birds in a backpack while overlooking the ocean at Coogee Beach as the state of New South Wales continues to report low numbers for new daily cases of the coronavirus disease (COVID-19), in Sydney, Australia, August 25, 2020. REUTERS/Loren Elliott

Nickerla Ambroise Etienne walks while carrying a backpack outside her house in Port-au-Prince, Haiti ,August 17, 2020. Picture taken August 17, 2020. REUTERS/Andres Martinez Casares

Nickerla Ambroise Etienne walks while carrying a backpack outside her house in Port-au-Prince, Haiti, August 17, 2020. Picture taken August 17, 2020. REUTERS/Andres Martinez Casares

Nickerla Ambroise Etienne puts notebooks and books inside her backpack before going to school in Port-au-Prince, Haiti, August 17, 2020. Picture taken August 17, 2020. REUTERS/Andres Martinez Casares

A student wears a backpack with a white ribbon to show support for the student-led democracy movement at King Mongkut's Institute of Technology, in the outskirts of Bangkok, Thailand, August 19, 2020. REUTERS/Jorge Silva

A woman carries her dog in a backpack during a rally in solidarity with Belarusian people following recent protests to reject the presidential election results, in front of the Belarusian embassy in Moscow, Russia August 15, 2020. REUTERS/Evgenia Novozhenina

A woman carries her dog in a backpack during a rally in solidarity with Belarusian people following recent protests to reject the presidential election results, in front of the Belarusian embassy in Moscow, Russia August 15, 2020. REUTERS/Evgenia Novozhenina

Weapons and helmets are seen atop the backpacks of U.S. Military Academy (USMA) cadets during tactical and physical training activities as part of Cadet Summer Training at West Point, New York, U.S., August 7, 2020. REUTERS/Mike Segar

A man holding a backpack with an image of the eyes of late president Hugo Chavez walks off the punishment area set by security forces for people who disrespect social distancing measures, in the low income neighbourhood of Petare, amid the outbreak of the coronavirus disease (COVID-19), in Caracas, Venezuela August 5, 2020. Picture taken August 5, 2020. REUTERS/Manaure Quintero

Dyson design engineer Jessica Rowley examines pollution data gathered by a special backpack designed to monitor air quality during the COVID-19 lockdown on Clapham Common, London, Britain June 29, 2020. Picture taken June 29, 2020. REUTERS/Stuart McDill

A badge on a backpack designed to monitor pollution during the COVID-19 lockdown reads "I'm an Air Quality Scientist" as Dyson design engineer Jessica Rowley examines data on her laptop on Clapham Common, London, Britain June 29, 2020. Picture taken June 29, 2020. REUTERS/Stuart McDill

A badge on a backpack designed to monitor pollution during the COVID-19 lockdown reads "I'm an Air Quality Scientist" as Dyson design engineer Jessica Rowley examines data on her laptop on Clapham Common, London, Britain June 29, 2020. Picture taken June 29, 2020. REUTERS/Stuart McDill

A badge is seen on a special backpack designed to monitor pollution during the COVID-19 lockdown on Clapham Common, London, Britain June 29, 2020. Picture taken June 29, 2020. REUTERS/Stuart McDill

A dog, carried in a protester's backpack, howls as demonstrators march at the Port of Oakland commemorating the end of slavery in Texas, two years after the 1863 Emancipation Proclamation freed slaves elsewhere in the country, known as Juneteenth, in Oakland, California, U.S., June 19, 2020. REUTERS/Nathan Frandino

Backpackers are seen in a street, amid the coronavirus disease (COVID-19) outbreak, in Venice, Italy June 19, 2020. REUTERS/Fabrizio Bensch

A sign is displayed next to a backpack during a vigil on the third anniversary of the death of Charleena Lyles, who was shot and killed in 2017 at her apartment by Seattle Police, at Magnuson Park in Seattle, Washington, U.S. June 18, 2020. REUTERS/Lindsey Wasson

A man is treated with milk from his own first aid backpack after being exposed to tear gas during a rally against racial inequality and the police shooting death of Rayshard Brooks, in Atlanta, Georgia, U.S. June 13, 2020. REUTERS/Elijah Nouvelage TPX IMAGES OF THE DAY

Motorbike taxi drivers prepare to strap on backpack-style plastic partitions to prevent the spread of coronavirus diseases (COVID-19) as they wait for customers in Jakarta, Indonesia, June 9, 2020. Picture taken June 9, 2020. REUTERS/Willy Kurniawan

A person stands on a social distancing sign painted on the pavement during a protest rally demanding the resignation of Czech's Prime Minister Andrej Babis, the sign on the backpack reads: "Mask is not a muzzle", following the coronavirus disease (COVID-19) outbreak, in Prague, Czech Republic June 9, 2020. REUTERS/David W Cerny

A shopping cart and backpacks mark people's places in a queue while they wait to receive donated food at San Ramon Nonato Catholic parish amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, June 2, 2020. REUTERS/Susana Vera

Giulio Giovannini, 12, with his mother Gloria, carries a backpack with a tablet, after traveling from his family cottage in the Tuscan countryside, where he has no internet signal, to the top of a hill where he is able to access the Internet to participate in online lessons while schools remain closed due to the spread of coronavirus disease (COVID-19), in Scansano, Italy, April 15, 2020. REUTERS/Jennifer Lorenzini

Giulio Giovannini, 12, and mother Gloria carry a backpack with a tablet, a small camping table and a chair as they travel from their family cottage in the Tuscan countryside, where he has no internet signal, to the top of a hill where he is able to access the Internet to participate in online lessons while schools remain closed due to the spread of coronavirus disease (COVID-19), in Scansano, Italy, April 15, 2020. REUTERS/Jennifer Lorenzini

Giulio Giovannini, 12, together with his mother Gloria, puts a backpack in the car with a tablet, a camping chair and a picnic table, to travel from his family cottage in the Tuscan countryside, where he has no internet signal, to the top of a hill where he is able to access the Internet to participate in online lessons while schools remain closed due to the spread of coronavirus disease (COVID-19), in Scansano, Italy, April 15 2020. REUTERS/Jennifer Lorenzini

Giulio Giovannini, 12, with his mother Gloria, prepares the backpack with a tablet, a small camping table and a chair, to travel from his family cottage in the Tuscan countryside, where he has no internet signal, to the top of a hill where he is able to access the Internet to participate in online lessons while schools remain closed due to the spread of coronavirus disease (COVID-19), in Scansano, Italy, April 15, 2020. REUTERS/Jennifer Lorenzini

Giulio Giovannini, 12, together with his mother Gloria, a backpack and a tablet, leaves the house to travel from his family cottage in the Tuscan countryside, where he has no internet signal, to the top of a hill where he is able to access the Internet to participate in online lessons while schools remain closed due to the spread of coronavirus disease (COVID-19), in Scansano, Italy, April 15, 2020. REUTERS/Jennifer Lorenzini

Backpacker and Spanish language student Lola Daehler, from the U.S., is pictured at a classroom after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

A general view of Pedro La Laguna, Guatemala, where backpacker and Spanish language student Lola Daehler from the U.S. has decided to stay as she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

Backpacker and Spanish language student Lola Daehler, from the U.S., jumps into the water after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria TPX IMAGES OF THE DAY

Backpacker and Spanish language student Lola Daehler, from the U.S., is pictured at a classroom after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

Backpacker and Spanish language student Lola Daehler, from the U.S., talks with her friend after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

Backpacker and Spanish language student Lola Daehler, from the U.S., is pictured at a classroom after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

Backpacker and Spanish language student Lola Daehler, from the U.S., is pictured at a classroom after she decided to stay in Guatemala, where she feels safer to confront the outbreak of coronavirus disease (COVID-19), in San Pedro La Laguna, Solola, Guatemala March 27, 2020. Picture taken on March 27, 2020. REUTERS/Luis Echeverria

An Uber Eats food delivery courier's backpack is seen in Paris during a lockdown imposed to slow the spread of the coronavirus disease (COVID-19) in France, France, April, 1, 2020. French supermarket retailer Carrefour and Uber Eats would launch a new delivery service aimed at helping Parisians buy essential goods and food during the nationwide lockdown triggered by the coronavirus crisis. REUTERS/Gonzalo Fuentes

An Uber Eats food delivery courier's backpack is seen in Paris during a lockdown imposed to slow the spread of the coronavirus disease (COVID-19) in France, France, April, 1, 2020. French supermarket retailer Carrefour and Uber Eats would launch a new delivery service aimed at helping Parisians buy essential goods and food during the nationwide lockdown triggered by the coronavirus crisis. REUTERS/Gonzalo Fuentes

A scooter driver of mobile app toters puts a delivery inside a courier's backpack amid the coronavirus disease (COVID-19) outbreak, in Beirut, Lebanon March 18, 2020. Picture taken March 18, 2020. REUTERS/Mohamed Azakir

An Uber Eats food delivery courier's backpack is seen in front of a fast food restaurant as the spread of coronavirus disease (COVID-19) continues in Amsterdam, Netherlands March 25, 2020. REUTERS/Eva Plevier

An Uber Eats food delivery courier packs his backpack as the spread of coronavirus disease (COVID-19) continues in Amsterdam, Netherlands March 25, 2020. REUTERS/Eva Plevier

A commuter wearing protective gloves stands in Waterloo station during rush hour, as the number of Coronavirus cases grow around the world, in London, Britain, March 17, 2020. REUTERS/Hannah McKay

A commuter wearing protective gloves stands in Waterloo station during rush hour, as the number of Coronavirus cases grow around the world, in London, Britain, March 17, 2020. REUTERS/Hannah McKay

A father carries the backpack of his daughter as he waits for her at entrance of a school after Catalonia announced to close schools, kindergartens, institutes and universities from tomorrow as a precaution against coronavirus in Barcelona, Spain March 12, 2020. REUTERS/Nacho Doce

A father carries the backpack of his daughter as they ride their bicycle home after Catalonia announced to close schools, kindergartens, institutes and universities from tomorrow as a precaution against coronavirus in Barcelona, Spain March 12, 2020. REUTERS/Nacho Doce

Backpacks of students are seen at a school after Catalonia announced to close schools, kindergartens, institutes and universities from tomorrow as a precaution against coronavirus in Barcelona, Spain March 12, 2020. REUTERS/Nacho Doce