Description This breast milk storage ice pack is manufactured with rubber material, it can serve you for a longtime. Rubber material can ensure its durability and practicability. A ice pack for you to keep the freshness of breast milk. Features - Color: Blue - Material:Rubber - Size: About 20.00X10.00X4.00cm/7.86X3.93X1.57in - Lightweight and portable design saves more space for you and perfect for lunch bags, cooler backpacks, breast milk bags, etc. - After freezing for 10-12 hours, this ice pack can keep breast milk fresh for about 10 hours. - Made of durable rubber material,ice pack is practical and convenient, and can be used for a longtime. - Perfect for working moms, picnic, longtime transport, keep breast milk fresh, cool down. - Ice packhas a simple design, but very practical in use, giving you a good using experience.Package list: 4 x ice packs