CoreX Functional Fitness Ab Straps, Sleek Design, Fully Padded, Mesh &ldquo;Breathable&rdquo; Sweat Dissipating Lining, Length Adjustable Extender Straps. Commercial Quality. Sleek, unique design, built for comfort. Internal padded for entire circumference of ab strap (not just base and lower sides like competitor ab straps). Multiple layers or breathable, sweat dissipating mesh lining. Heavy duty, tear and stain resistant nylon outer (two layers), with internal webbing for extra strength and durability. 21 inch long extender straps enable length adjustment (looping over straps to desired length) and near universal mounting. Thick, high quality webbing throughout. Heavy duty 4 inch long carabiners