Reports in the US suggest there has been a rise in demand for child body armour in the wake of last week’s massacre in Connecticut.
One company in Utah which makes a bulletproof backpack said the product was designed to save children’s lives after previous school shootings.
“The concept came up as things happened at schools. Children need protection as well,” said Rich Brand of the manufacturer Amendment II.
The company’s name suggests a reference to the Second Amendment to the US Constitution, which gives citizens the right to bear arms.
The effectiveness of the packs has been questioned: one police source doubted they would have saved the lives of children in Newtown.
Each pack costs $300 (227 euros). Some parents think they are worth the investment.
“I would like to buy it because it would protect. It’s something I would buy in the future,” said one mother in Houston, Texas.
In Connecticut and some other states one minute’s silence marked one week since a gunman shot dead 20 children and six adults at a primary school.
The dean of Washington Cathedral has spoken of a “moral obligation” to work for an end to gun violence.