Our sweat vest is made of lightweight stretchy fabric and moves your body while performing some activities. It can speed up sweating because of the inner spandex fabric to boost body heat and to fast calories burning, which is helpful for you to lose weight and enhance blood circulation etc.. It looks great and matches with different types of cloth to fit your needs. Boost Blood Circulation: Adopt inner Spandex fabric to boost body heat and stimulate sweating with kinds of sports to burn more calories detoxification, improved immune system and enhanced blood circulation etc.. Slimmer Body Shaper: The inner fabric can make it stay in place and you will look slimmer and more toned. Wide Application: You can wear it at work, running, Yoga, gym or dancing etc.. Besides, wearing it in daily life is also a good choice like studying, travelling and other activities under your outfit. Premium Fabric: The inner fabric can shape your body and the outer fabric can help absorb sweat while increasing body temperature. Perfect Gift: If you like sweating, like doing sports and want to lose weight through sports, it will be a good choice for you. Note: *There will be some smell when you first use it. You can hang it in a ventilated place. *Please forgive 2-3cm error due to manual measurement. Brand: NPOLAR Product Type: Sweat Vest Color: Black Material: Spandex Item Size: S/M: 22x28.5in L/XL: 22.83x33.85in XXL/XXXL: 23.62x37.8in Item Weight: S/M: 94.2g/0.2lbs L/XL: 100g/0.22lbs XXL/XXXL: 107g/0.24lbs Package Size: S/M: 11.8x7.87x0.5in L/XL: 11.8x7.87x0.5in XXL/XXXL: 11.8x7.87x0.5in Package Weight: S/M: 141.5g/0.32lbs L/XL: 147.3g/0.33lbs XXL/XXXL: 154.3g/0.34lbs 1x Sweat Vest