3M's gel technology creates a wrist rest that is firm enough to provide the support you need, but soft enough for optimal comfort. Gel-filled wrist rests are guaranteed not to leak & are puncture-resistant under normal use. Black leatherette cover features antimicrobial product protection which inhibits the growth of microorganisms, such as bacteria, on the product surface, that can cause stains, odors & product degradation. Wrist Filling Material: Gel; Mouse Pad / Wrist Rest Type: Large Mouse Pad with Wrist Rest; Color(s): Black; Theme: Solid Color.