This waist trainer has extra compression and molds your torso and waist exponentially. Made with the versatile Powernet; not latex. Hypo-allergenic inner cover with clasps and flat closure, which allows it to be virtually invisible underneath clothes. To choose your correct size, it is advised to select 1 size up from your regular shirt size, 4X fits waist size 48 - 53 inches. BRAND NEW! It's too small and can't return it. Go up 2 sizes; tag says 4x but fits like a 1X. Length of torso-13 in.