This set includes 3 gel‑filled packs sized at 9 in. long by 4 in. wide, which supports both cold‑therapy and heat‑therapy modes paired with targeted compression to ease physical discomfort without ointments or pills. For cold‑therapy application, users only need to store the packs inside a freezer for 20‑25 minutes, and the item can release cooling effects for roughly 50 minutes to slow blood circulation around hurt areas, reduce inflammation and swelling from sprains, strains, bruises, sports‑related wounds and post‑surgery conditions such as ACL surgery. Heat‑therapy mode dilates blood vessels to boost circulation and supply oxygen and nutrients to muscles, joints, ligaments and tendons for relieving chronic issues including muscle spasms, joint stiffness and arthritis‑caused soreness. The product works for multiple body areas such as shoulders, backs, knees, elbows, wrists, ankles, feet, necks and hips to assist injury rehabilitation and ease stomach‑aches and muscle fatigue. The outer layer consists of soft‑touch fabric while the interior is filled with non‑toxic, latex‑free gel with leak‑proof properties. The gel pack keeps flexible after freezing instead of becoming rigid, and it fits closely against different body parts during the whole treatment process. Physical therapists, doctors and sports trainers approve this structure to provide long‑term therapy for swollen soft tissues, stiff joints and sore muscles. Color: Blue.