Long-Lasting Cooling Performance: Our reusable ice packs provide 24 to 48 hours of cooling, perfect for keeping your lunchbox, cooler, or shipped meals fresh and cold. Ideal for daily use or outdoor adventures like camping and picnics. Slim & Space-Saving Design: Designed to fit seamlessly into any lunchbox, igloo cooler, or shipping box, these slim and flat ice packs maximize space while ensuring efficient cooling. No more bulky, awkward ice! Leak-Proof & Durable Gel Ice Packs: Made with high-quality, non-toxic gel, these XMPTPK ice packs are leak-proof and reusable. Whether for food delivery, lunchbox cooling, or freezer storage, they are built to last. Versatile & Multi-Purpose Use: From keeping your lunchbox cool to preserving perishables during shipping, these small yet powerful ice packs are perfect for food delivery, picnics, camping, and everyday use. A must-have for any cooler or igloo setup! Eco-Friendly & Easy to Use: Simply freeze and reuse! These disposable-looking ice packs are actually reusable, making them an eco-friendly choice for anyone looking to reduce waste while enjoying reliable cold storage. Methods of Use: Soak in water for 10 minutes to absorb the water and expand and then take it out, be sure to dry the surface with a towel (to prevent sticking when freezing), freeze for at least 8 hours and then you can use it. XMPTPK Ice Packs for Cooler, Lunch Boxes and Shipping, Slim design Reusable Gel Freezer Packs for Frozen Food & Drinks, Camping, Picnic and Fishing（50PCS）