Actually it uses Velcro® strips to attach to the desk.
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Shifting some of the upper torso body weight to the forearms can reduce static muscle loading in lower back. Desk edge and corner workstation padding is used in many industries, including electronics assembly and other small product assembly line environments. Ergomart's ergonomic forearm support pads are upholstered in durable vinyl on thick foam padding for day-long coverage. Select the 24 inch or 36 inch forearm support.
Actually it uses Velcro® strips to attach to the desk.
Four double-sided Velcro® strips create the attachment point. The Velcro® strips are 1-1/2" long and 1/2" wide.