Zipper closure ?HIGH QUALITY MATERIAL–15%Polyester, 70%Neoprene, 15%Nylon. Diving suit material, quick-drying, keeps you dry even you are sweating. ?FLUORESCENT ZIPPER DESIGN–The fluorescent strips on the zipper glow at night,just like the stars in the night sky. The full zip up feature is great for taking on or off with ease. And the zipper of the gym jacket is sturdy and durable, helps to lock the heat inside your body once zipped up. ?INCREASE SWEATING–This weight loss body shaper can preserve body heat and stimulate sweat during exercise. It is made for workout exercise, which can make you sweat 3 times and help to flatten your tummy, lose inches and burn the fat away. Long sleeves reduce heat loss and It can keep you warm in cold weather. ?REDUCE YOUR WEIGHT–This hot sweat shirt increases thermal activity in the abdomen, waist, back and the rest of the upper body and stimulates sweating, accelerating the fat burning process to shape and reduce the waist and abdomen. Shaper slimming sleeve with compression, reduce unwanted arm inches. ?SUITABLE OCCASIONS–Home, gym, exercising, cycling, yoga, running, walking, indoor, outdoor, any occasion you want to lose weight and look slimmer. It matches with any combination of workout pants.