This is just for you! It's very boring to go to the gym every day, and waste a lot of our precious leisure time. To save more time for more interesting things, we designed this Hot Sweat Sauna suits. This clothes can heat up your muscles and make you sweat triple than usual while keeping the same exercise intensity in the same time. you'll reach your fitness goals faster and easier than expected with significantly less effort! The clothes was made up of neoprene which used to make diving suits, the special material constitute 70% Neoprene, 15% Polyester, 15% Nylon and almost not breathable and perspire. it was specially made for workout exercise, which can increase your body temperature and make you sweat more like never before and help to flatten your tummy, Lose inches and melt the fat away! NOTE: Clothing size: We provide 6 sizes of clothes for you to choose from, please order the suitable size compare the size chart, if the clothes is not fit you, please contact us, we will reply you as soon as possible and give you the best customer service. The smell: The smell of Neoprene is normal and easy gone after a few times washes, Its normal and have no danger, Before you wear it for the first time, please soak the clothing in cold water and hand wash,air dry it out to release smell. Wearing time: The Neoprene is not breathable and the vest was designed for hot sweating during exercise, so we dont recommended you wear it longer than 2 hours, when you finish exercise, wash it immediately. Skin sensibility: For someone whos skin is sensitive with Neoprene, they may feel itching or tingling or other comfortable condition after wear the clothes, please take off immediately and stop using it. Washing Instruction: Its only hand washable and should not be washed or dried in a machine.