Chattanooga s ColPaC Cold Pack come in different sizes and shapes to fit any body area. Simply chill in freezer and apply.The Chattanooga ColPac Cold Therapy Pack provides instant pain relief to treat fever bruises sprains strains and helps to manage swelling. It delivers up to 30 minutes of soothing relief. Simply apply immediately after an injury to control the inflammation of soft tissue. The patented design of the Chattanooga ColPac gently delivers soothing cold therapy and stays pliable during treatment. Each blue vinyl Chattanooga ColPac is latex-free and is filled with non-toxic silica gel so it s safe for all ages to use. This cold therapy pack is extremely durable and is commonly used in team sports and safety kits. Recommended the most by Physical Therapists and Sports Trainers.