The velcro to make sure that the belt is fastened tightly around the abs. It can support the lumbar muscle in the waist to relieve strain and soreness.
Slimming Waist Trainer Belt: Sweat, Burn Fat for Tummy Control & Weight Loss
Mens & Womens Waist Trainer Belt: Fat Burning, Sweat-Inducing, Slimming Gym Gear
Slimming Waist Trainer Belt - Sweat & Burn Fat for Tummy Control & Weight Loss
