A great all-around shoe, the fashionable Trickster from Mad Rock® features low-stretch synthetic uppers with a comfortable padded tongue, Science Friction rubber for sticky friction, and Edge Tech-it’s totally tweaked for climbing. Recommended use: Bouldering, Gym, Sport, Competition. TekFlex synthetic upper with one-piece cuff binding, a padded liner and tongue for low-stretch and comfort. One piece metal rings with contoured TPR rubber straps for a great fit. Reinforced, externally-stitched, offset, and aligned dual pull tabs for easy entry and blister-free comfort. Science friction 3D molded heel cup for contoured fit. Midsole is 1.5mm compressed polyester for controlled flex and stiffness. Edge Tech System: traditional flat soles for a sharper and straighter edge. Science Friction rand rubber for sticky friction on overhangs. Science Friction 2.2 climbing rubber sole for superior friction. Descent tread: reverse hook tread for stable descents. Anti-Shock foam cushion inside the heel absorbs impact and reduces pressure. Vegan friendly. Mad Rock Size adjustment recommendations for fit: Comfort (0), Performance (-1/2 size), High Performance (-1 size), Competition (-1 1/2 size). Sizing modifier: High Volume Feet (+1/2), Low Volume Feet (-1/2).