About the Product Chattanooga Over-Size Cold Pack (12.5" x 18.5") Patented design of the Chattanooga ColPac gently delivers soothing cold therapy and stays pliable during treatment Provides instant pain relief to treat fever, bruises, sprains, strains, and helps to manage swelling Each cold therapy pack is latex-free and is filled with non-toxic silica gel, so it's safe for all ages to use Simply apply immediately after an injury to control the inflammation of soft tissue; Delivers up to 30 minutes of soothing relief Recommended the most by Physical Therapists and Sports Trainers, every Chattanooga ColPac is backed by a one-year warranty