Style No PY921 This adjustable neoprene wrap with a removable gel pack in the back, it can be treated on your waist, elbow, thigh, ankle, shoulder and knee to relieve the pain. Simply chill the gel pack to reduce swelling and pain, or heat the gel pack to enhance circulation, loosen tight muscles and melt away stress. - 可冷熱敷於不同的部位上(腰部,手臂,肩膀.大腿,腳踝,膝蓋...etc.) - 減緩腫脹疼痛 - 提高新陳代謝 加速血液循環 - 緩和肌肉壓力