All leather, no foam for our signature Close Contact palm that maximizes feel on bar. Patent-pending BioFlex layered stretch design mimics the hand's natural motion. Exclusive Spider Grip leather on palm. Precurved extended finger length. Fully adjustable Wrist Wrap with Fit Lock tension tab that eliminates excess bulk. Machine wash & dry leather. U.S. & International Patents Pending. Spider Grip leather is made exclusively by Harbinger Leather.