Milisten Reusable Ice Packs for Coolers, 4pcs Ice Packs for Lunch Boxes, Boxes Freezer Blocks for Air Conditioner Fan, Backpack, Camping, Picnics, Beach, Fish(150ml, No Water Required)

["Rapid Freezing & No-Prep Convenience: No water filling is required, simply freeze these freezer packs for coolers for 3-4 hours for instant use. These pre-filled freezer blocks for coolers achieve levels quickly, acting as professional ice packs for air conditioner units or swamp cooler accessories that deliver icy relief without the hassle of leaks or complicated setup","Ultra-Low Temperature Performance (-12°C): Unlike general waterfilled packs, these ice packs for lunch boxes contain high-performance crystal gel that reaches temperatures below -12 degree Celsius. This \"Below-Freezing\" power ensures your lunch box ice packs stay significantly colder for longer, providing a high-intensity ice pack for cooler experience that outclasses ordinary ice","Optimized for Air Coolers & Fans: Transform your home environment by using these as a ice pack for fan or ice packs for portable air conditioner system. The intense cold from these cooling block units helps circulate crisp, chilled air, effectively functioning as an ice conditioner to lower ambient temperatures during the peak of summer","Universal Fit & Versatile Portability: These reusable ice packs for coolers are designed with a slim, space-saving profile to fit most ice blocks for cooler, lunch bags, and backpacks. Whether used as flexible ice packs for coolers for outdoor fishing or as an essential ice packs for cooler for camping and beach picnics, they provide maximum cooling in a compact condition","Durable & Reusable Cooling Solution: Built for thousands of freeze cycles, this 4-piece cooling block set offers a sustainable alternative to disposable ice. The robust, leak-proof construction of these ice blocks for cooler ensures they remain a reliable part of your cooler ice packs collection, providing professional-grade lunch ice pack and long-term freshness"]