The U-Konserve non-toxic gel pack comes inside a cover made from recycled plastic bottles! This reusable ice pack is ideal for kid's lunch boxes, keeping baby bottles cold, and handy for boo boos. The ice pack fits perfectly on the bottom of our insulated lunch bags and cotton sacks. Pop in the freezer, place in your lunch sack, and it will keep your lunch cold for hours. Or carry with you in your reusable shopping tote to keep groceries cold on your way home.