Made Especially for the Pro Fit® Ergo Vertical Wireless Trackball Featuring tough 1680D polyester fabric with a soft interior that perfectly follows the contours of the trackball. Shockproof, Dustproof, and Water Resistant Offers exceptional protection from bumps, drops, dirt, and scratches. Compact and Lightweight Requires minimal space, for ease of mobility.. Includes Carabiner and Lanyard For added transport options. Made especially for the Pro Fit® Ergo Vertical Wireless Trackball, the hard case features tough 1680D polyester fabric with a soft interior that perfectly follows the contours of the trackball. Shockproof, dustproof, and water resistant, the case is compact and lightweight, and offers exceptional protection from bumps, drops, dirt, and scratches. Includes carabiner and lanyard for easy transport.