CURVED SPIKES! 2 per pack Dimensions: 3.5” x 3.125” (each) This traction comes with two independent pads that allow you to place them directly under your toe and heel for maximum control. TECHNOLOGIES: THORN-SPIKES™ Curved, thorn-shaped spikes hook into your boot treads for incredible grip. CRUBBER™ Our lightweight secret blend of materials flex naturally with your board. SCREW GLUE™ Glued on. Like it was screwed on.