S: suitable for men of 50-60kg M: suitable for men of 60-70kg L: suitable for men of 70-77.5kg XL: suitable for men 77.5-85kg XXL: suitable for men 85-97.5kg XXXL: suitable for men 97.5-105kg Hook and Eye closure Waist trimmer belt constructed by neoprene material which can enhance sweat by retaining body heat whilte you are training, give you a push to elevate workout and train you to drop some extra fat on waist, promote body weight loss. Weight loss waist cincher boost body temperature to ramp up perspiration, accelerate calories burning and shed the harmful fat along with sweat while workout, shrink your waistline, flatten stomach and build muscle to improve body image. Waist trainer corset with 4 steel bones provides extra brace support for abdominal muscles and lower back, help release pressure on waist and enhance muscle mobility without bothering, firm structure tighten your abdomen to achieve toning effect. Tummy control shaper with 6 adjustble hooks allow you to control the compression you need, durable and stretchable fabric provide wide cover to hold tummy well and smooth out the lumps and bumps on waist, help get rid of the stubborn belly fat . If you want to maximize fat loss potential and reshape body in better condiction, this shapewear is your soluction which help burn more fat, relieve back pain and correct posture, it is ideal for workout exercise, sports, running and lifting.