Trusted by physical therapists and sports medicine professionals worldwide, the ColPaC® Half Size cold pack provides up to 30 minutes of deep, soothing cryotherapy. This 6.5" x 11" pack is filled with a specialized non-toxic silica gel that remains pliable and soft when frozen, ensuring it contours effectively to joints and muscle groups like the neck, knees, or lower back. The durable, heavy-duty black vinyl exterior is built to withstand frequent use in clinical environments or at home. It is designed to relieve pain associated with swelling, sprains, muscle strains, and post-surgical inflammation, helping you recover faster and more comfortably.