Reusable HDPE Ice Packs — durable, easy-to-use cooling solution for insulated bags, lunch boxes, travel coolers and medical transport. Key benefits Keeps food and perishable items cool and fresh for several hours when used in an insulated bag or lunch box. Reusable HDPE construction for long-term use and reliable cooling performance. Simple to prepare and reuse: freeze, use, then refreeze to maintain a cold chain. Features and specifications Material: reusable HDPE. Freeze time: place in freezer for at least 6 hours before first use. Performance: provides sustained cooling for transporting food, breast milk, medications, vaccines and other perishables when paired with insulated containers. Compatible with: insulated bags, lunch boxes, travel bags, coolers, meal-prep containers, nappy bags, insulin packs and gym bags. How to use Place ice pack in the freezer for a minimum of 6 hours. Put frozen ice pack into an insulated bag or container alongside items you want to keep cool. After use, return to freezer to reuse as needed. Practical applications and scenarios 1) Family picnic or grocery transport — keep sandwiches, salads, seafood and dairy chilled inside an insulated cooler during short trips from store to home or for outdoor meals. 2) Infant feeding and medical transport — maintain safe temperatures for breast milk, baby formula, medication or vaccine samples in nappy bags and insulated carriers. 3) Sports and recovery — include in gym bags for cold therapy after workouts or to keep post-exercise meals and drinks cool. Why customers choose this ice pack Reusable HDPE design for durability and repeated freeze–thaw cycles. Straightforward preparation and broad compatibility with common insulated carriers. Versatile for both everyday food transport and sensitive medical or athletic needs.