Active Cold Recovery Doubleball combines myofascial and cold treatment in one. Doubleball structure enables fast and effective pain relief especially in the neck, back, shoulder and calf areas. The ball has cooling gel inside and it can be placed into freezer. Cold treatment reduces inflammation and swelling from training, sports injuries arthritis and more. Use Cold Recovery Ball for more relaxed muscles, better range of movement and better posture. Freezer time: max 5 hours per time.