Quality Material: This fitness waist sauna vest is made of high quality Spandex fabric comfortable, soft, durable and reducing chafe. Heat Trapping: Sweat Enhancing Vest Designed to create a hot sauna like experience rising your body temperature to lost water weight and burning more calories. Waist Trainer: Compression Vest Compression design tucks in the mid section and provides light support for your muscles to shape your dream abdomen pads. Daily Wearable: Sweat Vest compact and thin allow you to wear it hidden underneath your clothes, waterproof so no sweat will be able to leak through the normal vest. Suitable for Workout and Fitness: such as running, yoga and etc. Long term wear can keep your waist slimming and help you to get a excellent shape of body. Specification: Material:Spandex Size Chart: S/M: Waist: 76cm-91cm/29.92inch-35.83inch, Chest: 84cm-99cm/33.07inch-38.98inch, Length: 57cm/22.44inch; L/XL: Waist: 84cm-99cm/33.07inch-38.98inch, Chest: 92cm-107cm/36.22inch-42.13inch, Length: 59cm/23.23inch; 2XL/3XL: Waist: 92cm-107cm/36.22inch-42.13inch, Chest: 100cm-115cm/39.37inch-45.28inch, Length: 61cm/24.02inch; 4XL/5XL:Waist: 100cm-115cm/39.37inch-45.28inch, Chest: 1108cm-123cm/42.52inch-48.43inch, Length: 63cm/24.80inch. Package Includes: 1 Sauna Vest Note: Please allow slightly errors due to manual measurement and different monitors.