Cold and Hot Compress - The ice pack can be used as a hot or cooling gel pack for boys and girls. For cold therapy, just place the ice pack in the freezer for at least 30 minutes. For hot therapy, place the gel pack in the microwave or in hot water. Soft when frozen - Reusable mini ice gel packs are reusable and flexible, perfect for use on almost any part of the body: shoulder, upper/lower back, knee, elbow, neck, wrist, head, eyes, ankle and foot. DUAL-USE HOT AND COLD PACKS - The reusable ice pack bags are very practical at home, can be used for injuries or to keep your lunch box cool. Natural and safe, soft ice pack for quick and easy relief, flexible. Reusable, non-toxic NATURAL AND SAFE - Soft ice or heat packs for quick and easy relief. Flexible. Reusable. Reusable ice pack, practical at home and can be used for injuries or to keep your nose cool.