Soothing sore, aching muscles, the Arctic Flex massage ball roller set simplifies self-massage while adding gentle heat or cold therapy for effective relief. The stainless steel massage balls are filled with a water-based solution and can be safely stored in the freezer to provide cool relief as it glides along the skin. Durably constructed, each massage ball rests in a contoured base with a nonslip band for a comfortable, yet secure grip. FEATURES Cold Soothing Self Massage Ideal for post workouts and muscle recovery, the Arctic Flex cold massage ball rollers reduce inflammation and discomfort with a soothing coolness. The stainless steel roller balls glide along the skin with self-directed pressure for targeted deep tissue massage and trigger point therapy. Smooth Stainless Steel Roller Gliding smoothly over bare skin, each 2.5” roller ball is constructed with stainless steel and filled with a water-based mixture that can be gently heated or quickly frozen for soothing relief. Nonslip Silicone Base Easy to hold for self-directed pressure at any angle, the roller ball base is contoured to fit comfortably in either hand. The base also features a silicone band for a secure, nonslip grip. Two Durable Massage Balls Sized for convenient travel, the set includes two Arctic Flex massage ball rollers. Each roller is latex-free and non-irritating for safe use on any skin type. GENERAL SPECIFICATIONS What’s included 2 pc cold roller Made of steel with freezing liquid inside to keep cool Inner liquid is a mixture of glycerin and water Ball is not removable Glides smoothly without pinching the skin Diameter of ball is 54mm Includes a outer silicone band for grip Contoured to fit in hand Provides trigger point massage / deep tissue How to use Stick in Freezer for 2+hours, remove and use Use Pre or post workout Muscle recovery Reduce inflammation Reduce injuries Care Rinse under cool water with mild soap, dry immediately, do not store wet.