Aonuy Mini Ice Packs, 4 Pcs of 6-Cell Freezer Blocks Reusable Small Flexible Pack for Lunch Boxes, Self-Absorbing Ices Packs Outdoor Picnics Cooler Bags Boxes-Keeps Food Fresh&Cool

【Lightweight & Compact】These mini ice packs are made from high polymer absorbent resin and polyester pongee. Each pack weighs approximately 10g before activation and absorbs up to 100g of water to expand into a cooling gel pack suitable for transporting chilled or temperature-sensitive items. 【Lock in Cold for Longer】Featuring advanced SAP cooling technology, these lunch box ice packs quickly absorb and retain water to create a gel-like core with excellent heat retention performance. Use with cool bags to help keep fresh food, dairy products, fruit and drinks chilled for over 6 hours. 【Enjoy Hot & Cold Therapy】More than standard ice blocks, these reusable packs support both cooling and warming needs. Freeze them for sports injury relief, food freshness and drink cooling, or warm them for muscle comfort, period care and keeping meals warm during travel. 【Easy to Prepare & Reuse】Simply soak the ice pack for lunch box use in water for a few minutes, wipe dry, then place it in the freezer for approximately 6 hours before use. After use, leave it in a ventilated area to dry naturally and reuse again when needed. 【Suitable for Daily & Outdoor Use】Ideal for school lunch bags, office meal prep, picnic baskets, hiking trips, fishing, camping, road trips and outdoor adventures. These versatile ice blocks for cool bags help keep food and drinks at the right temperature wherever you go.