The Nylon Fabric and Signature Stitch Lining of our gym belt join hands to optimally hold your core muscles in place for max performance Uniform 4" Size of our workout belt is more than enough to hug your back and front when you push your limits so that there’s no injury Experience an Equal Force Distribution by using our weight training belt as it doesn’t have a tapered design to only favor one area Powerlifting Belt’s Auto-lock Mechanism ensures a tighter grip unlike prong buckle that could come off anytime and cause a catastrophe Lever Weightlifting Belt’s Heavy-duty design and construction makes it stand the test of your time at the gym for years to come Astra Fitness Auto Locking Weight Lifting Belt Adjustable Nylon Gym Workout Belts for Men and Women Deadlifting Squatting Workout Belt - B035TIOSI