Crab Grab Peace Of Foam Traction Pad. Put an end to the senseless winter war of your feet fighting a slippery topsheet with this extra grippy Peace of Foam. C-Foam - Specifically formulated rubbery foam blend that's lightweight, heavy duty, and grabs like a crab. Screw Glue™ - Glued on. Like it was screwed on. Gripples - Crab Grab's signature texture: tiny little gripping nipples for maximum grippy-ness. 1 per pack. Dimensions: 3.9" each. Imported.