NINGMI Mens Waist Trainer Vest Hot Sweat Shirt Neoprene Sauna Suit Workout Body Shaper Cami for WeightLoss Tummy Fat Burner Material:This Neoprene Sauna Vest make of 90% polyester 10% Spandex(Neoprene),which is Comfortable, lightweight stretchy fabric.it will quickly absorb and evaporate when in fitness you sweat more.and provide comfortable fit, allowing you to have freedom to move while working out Breathable Mesh and Reflective Strip Design:Slimming Sweat Vest feature breathable mesh on both sides,circulates air in your body to stay dry on the outside, keeping you fresh and cool while retaining body heat to perform longer and you won't feel over exhausted,reflective strip design improves the safety of night sports while increasing the dynamics of sports SWEAT 3 TIMES MORE THAN USUAL,Speed-up the calorie burning process, and keeping your muscles warm and supported,stimulating you sweat more and heating up your extra and harmful fat,flatten your tummy and back ,help trim off inches and promote weight loss PROMOTES WEIGHT LOSS - Men Hot Sweat Sauna Shirt made with Neoprene which is great for weight loss.Lightweight Super Slim,No zipper deisgn provide comfortable fit,full-freedom to move while working out.it will help you to sweat more by heating up your core abdominal area during excercise,which allows you to eliminate toxins and expel extra water weight NOTICE: SMELL--This neoprene weight lose shaper have some material smell, it's pretty normal and would be gone after a few time washes.Washing instructions: Hand wash in cold water with a soft detergent