ITEM has passed the SGS certification test. Our brand 'Ursexyly' has been registered in US by USPTO. It is protected by laws in US. Item will be shipped by USPS. It normally takes 2-5 working days to reach PROMOTES BODY HEAT: Design to make you Sweat like crazy and enhance your workout to achieve your weight loss goals. The Sweat Enhancing Thermal Vest intensifies perspiration in your core more than regular gym-clothing during exercise Working its magic from your shoulders, down to waistline and burn your tummy fat. Runs small. Material: Neoprene, Microfiber, Nylon, Spandex. Zipper Front for Easy Access On or Off and stays on with no sliding, Comfortable & Light Weight, Hand wash for best results If your size is M but near to L, please choose L. SIZE: S M L XL 2XL 3XL 4XL. According to our size chart on the left of images and measure your waist size correctly that select a size really suitable for you. If you are not sure about your size or any other questions, please feel free to contact us. Didn't know how to choose the size, please contact us, we will respond to you soonest