These bags are made from heavy 1.25 mil polypropylene BasketBags™ have a slightly softer feel than cello film but good body and support like cello. BasketBags™ are heat sealable, but do not shrink. Available in several popular sizes. BasketBags™ have a bottom gusset. Large BasketBags™ by the carton. Complies with FDA regulations for food packaging. Fits our X-Large Beveled Market Trays.