FITactic Universal 4-Piece Traction Stomp Pad Grip Mat with Tail Kick for SUP, Longboards, Funboards, Standup Paddleboards. EXTRA GRIP: Keep your back foot in with confidence on critical bottom turns and cutbacks. QUALITY: We only use first grade diamond grooved EVA foam mat, and our tailor-made back adhesive (a special water-resistance layer added between EVA and adhesive) for longer use without peeling off. BUY with CONFIDENCE: All FITACTIC products have been developed and tested. DIMENTIONS: 20 x 16 inches, 25-30mm (1-1.2 inch) tail kick height. FITS SUP, Longboards by placing the 4 piece traction pad as your idea. Spread the pieces out for wider boards, closer for narrower ones.