MontiiCo Ice Packs are made with a wipe-clean nylon outer material. The outstanding quality remains with the same gel contents inside, but these new ice packs have a stronger, condensation-free outer layer. MontiiCo made this change for increased durability and protection from sunlight and tearing, for inner gel stability. The ice packs remain independently certified “food safe” and still comes with a machine washable cover to reduce condensation. Materials: Certified 'food safe' gel inner material.Wipe-clean nylon outer material.Machine washable fabric cover. Dimensions: Including cover: 16cm x 15cm x 1.5cmExcluding cover: 15cm x 13cm x 1.5cm Weight: Approx. 260g Care & Warranty: Freeze the ice pack flat and without its black outer fabric cover. Remove any frozen residue on the outside of the ice pack before placing it in the cover/bag. Always place the included ice pack inside the black fabric ice pack cover before using it inside the lunch bag.Machine washable cover. 6 month manufacturers warranty.