Rossignol Circuit Snowboard - Men's: Designed for beginning to progressing riders, the new CIRCUIT offers a comfortable and forgiving all-mountain ride so you can focus more on learning the motions, instead of falling on your face. Our AmpTek Auto Turn rocker profile supplies user-friendly fun in any snow conditions with effortless float and no-catch edge control for easy, natural progression so you can get better, faster. Sizes - 145, 150, 155, 160, 165 Core - Wood 5620 - A single type of wood, vertically laminated to give you durability and comfort without breaking the bank. Base Density - 1320 Extruded Shape - Directional All Mountain - A directional flex, stiff under the back foot for control, softer under the front foot for easier turn initiation, and stiffer through the waist for stability at high speed. Side Cut - Deep Progressive - A single type of wood, vertically laminated to give you durability and comfort without breaking the bank. Rocker Profile - AmpTek Auto Turn Rocker - INTENSITY TECHNOLOGY: Rossignol's three award-winning rocker/camber blends are each tailored to a specific riding style. AmpTek AUTO TURN features softer tips and a softer waist with 20% camber between the feet for dependable edge grip and stability, and 80% rocker at the tip and tail for a playful, easy ride in any terrain or snow conditions.