Product Size: 4.3" (L) x 3.1" (W), No need to cut, could be fit any size container. Ideal for use kid's lunch bags or adults lunch boxes, and coolers. Dry ice pack is also perfect for use in a gym bag, diaper bag, insulin case bag, lunch pail, camping cooler, meal prep container or picnic basket etc. Depending on different containers, different number of ice packs, the cold storage time of the ice packs will also be different. Application: Cold pack is the perfect ice replacement product. Reusable, and stays frozen for a very long time. Ice packs not only provide cooling effects for transportation of foods and seafood, perishables, breast milk, pathology samples, medicine, vaccines etc. Also can be used as cold therapy pack perfect for Sore Muscles and Recovery After Athletics and Injuries. Ice Pack's Benefits: Shipping ice packs are made of non-toxic, environmentally friendly and food touchable materials. The latest technology cold packs for cooler can lock the water inside after water absorption, and no slimy, no wetness, leakproof. After freeze, keeps food cool & fresh for long lasting 10 hours in insulation bags or lunch boxes. TIPS: Ice block packs, One side is a mesh material and the other side is plastic. Make sure let ice pack cells dry completly before freezing, then when placing in freezer, let the plastic surface touch the refrigerator. DO NOT LET THE MESH SIDES TOUCH EACH OTHER. ALSO DON'T LET THE MESH SIDE TOUCH THE REFRIGERATOR. or it will stick and freeze together. NOTE: It is NOT DRY ICE Carbon Dioxide, NO SMOKE! It is ice pack, dry package. Easy to Use: Soak fully ice cells in water about 1-2 minutes. After automatic water absorption, wipe ice block dry by a towel. After completely drying, freeze at least 6 hours. Use it as ice pack for cooler, ice packs for lunch boxes or lunch bags , dry ice pack for shipping etc, keep cold and fresh. Also depending on your needs, Shorten the soaking time, to have thin and slim cells. Set of 25 freezer blocks.Best Sellers Rank: See Top 100 in Health & Household. : B08WWZWPV2. Manufacturer: Rainbow. Date First Available: February 18, 2021. Department: unisex-adult. Package Dimensions: 4.93 x 3.43 x 1.18 inches; 3.21 Ounces.