• Reusable gel packs made from high-quality polymer compound, clean, non-toxic, safe, and environmentally friendly • The inner powder quickly absorbs water and transforms into an elastic gel that acts as a coolant • Self-sealing water inlet design prevents gel leakage • Easy to carry, comfortable to use, durable, and practical for multiple applications • Ideal for keeping food fresh in portable coolers, as cold compresses to relieve pain from minor injuries, and in insulated shipments to preserve fresh products • Bag material: polyethylene (PE) • Capacity of each bag: 200 ml • Size of each bag: 15 x 10 cm • Includes 10 reusable bags • Instructions for use: open the water inlet, add water as needed, remove air, seal, wait for the gel to form, freeze for 4-5 hours, and use • During use, the gel gradually thaws and can be refrozen for reuse • The product is non-toxic, but the contents are not edible • Do not over-press or expose to sharp objects to avoid damaging the bag