Made of food grade material, safe and non-toxic, keeps food fresh for longer and maintains the original food taste. Perfect for packing lunches for you and your kids, gallon bags can marinate meat, chicken, salmon, fish, meat and more. Sandwich bags can store leftovers and keep meal prep, seafood, fruits and vegetables fresh. Clear design allows you to clearly view the contents and keep multiple items together at the same time Simply hand wash in cold or room temperature water and place the bag on a cup. We recommend getting a drying rack from us, which is essential for reusable storage bags.