1. Breathable mesh and reflective stripe design: the slimming sweat vest features breathable mesh on both sides, circulates the air in your body to stay dry from the outside, keeping you fresh and cool while retaining body heat to work longer and you will not feel overtired. The reflective stripe design improves during night sports while increasing the dynamics of sports 2.MATERIAL This neoprene sauna vest is made of 90% polyester and 10% spandex (neoprene), a comfortable, lightweight, stretchy fabric. It absorbs and evaporates quickly when you sweat more in the gym. Move during training 3.Promotes weight loss Men's hot sweat sauna shirt made of neoprene, which is great for weight loss. The lightweight, super slim design without zip ensures a comfortable fit and full range of motion during training. It helps you sweat more by warming up. The core area of the abdomen is trained during exercise, which allows you to excrete toxins and excrete excess water weight 4.Sweat 3 times more than usual, accelerate the calorie burning process and keep your muscles warm and supported, stimulate more sweating and heat excess and harmful fat, smooth your stomach and back, help save centimetres and promote weight loss