FIRST AID ESSENTIAL: Instant pain relief for injuries, aching muscles and joints, backache, arthritis pain, strains, bruises and sprains and swelling and more, ideal for home or clinical use. SAFE and REUSABLE: Latex-free and non-toxic ice pack, safe for all ages to use, soft reusable and long-lasting, stays flexible even when frozen. MULTIPURPOSE: Hot cold packs can be used for pain to wisdom teeth, back, shoulder, neck, head, face, feet, hand, arm, etc. HOT COLD THERAPY: Gel ice packs can be cooled in freezer and used for cold therapy or heated in microwave or boiling water for use as hot therapy.