Slider Pad The Slider Pad is one of our favourite new pieces of bouldering gear. Made with high-density closed-cell foam with a base of ballistic nylon and an auto-carpet top, this is one of the handiest pads out there. It can be used to cover seams for big multi-pad areas or to wipe your shoes on before climbing. It can be easily carried by sliding it into other pads. At this price point, every boulderer should have a few Sliders to use.