ColdComfort non-toxic Ice It!® packs freeze quicker, maintain low temperatures longer and stay flexible when frozen to mold around painful areas for optimum therapeutic benefit. An insulated design in the ice pack retains cold longer, protects skin, and prevents condensation. Comfort-Flex™ elastic strap secures the system and provides customized compression allowing the user to maintain activities during cold therapy. Plush Stay-Put™ cover is fully removable for machine wash and dry. Available in 3 different sizes: 12 x 13 Knee System with 2 packs, 10.5 x 13 Ankle / Elbow / Foot system with 3 packs or 13 x 16 Shoulder system with 2 packs.