Crab Grab Board Thorns. The Board Thorns come with two separate pieces. While there certainly no rules when it comes to Crab Grab placement on your board, these work the best if you stickone piece under your toe and the otherunder your heel.

• 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.