Their favorite superhero team joins them at mealtime with this action-packed lunch box! Members from the Justice LeagueTM shine bright in dazzling glow-in-the-dark details. It’s durably made without the use of any harmful materials so your little hero can have a healthier lunch. Plus, it’s designed to fit our food storage containers. Shell is woven of tough 600-denier polyester. Interior lining is made of PEVA, an environmentally friendly, food-safe vinyl that’s made without chlorine or plasticizers. Lunch boxes glow in the dark. Glow-in-the-dark material needs to “charge" under bright light for approximately half an hour to glow properly. Glow lasts for approximately three to four hours. Our Classic Lunch Box holds a Spencer large, medium and mini food storage container and Spencer utensils; or a Spencer stainless steel bento box and Spencer utensils. Our Cold Pack Lunch Box holds a Spencer large, medium, small and mini food storage container; our hot/cold container and a stainless steel nesting medium container; or a Spencer stainless oval bento box, a stainless steel nesting medium container and a water bottle. Nesting ice pack can be used as a divider for the main compartment.