Craft Active Extreme X CN Short Sleeve Base LayerFor high-intensity sports and activities, the Craft Active Extreme X CN Short Sleeve Base Layer does a brilliant job of regulating body temperature, wicking away sweat and leaving you free to move easily. The Active Extreme X CN Short Sleeve Base Layer is a high-performance jersey which mixes together Craft’s SEAQUAL™ polyester and Coolmax® Air Technology.SEAQUAL™SEAQUAL™ is an eco-friendly fabric that is made from plastic pollution and helps to clean our oceans from marine litter. The material also offers optimised moisture transport and ventilation – ensuring maximum comfort during high-intensity workouts.Coolmax® Air TechnologyMeanwhile, Coolmax® Air Technology is used throughout the base layer. This specialised fabric technology provides excellent temperature control in both cold and warm conditions. The technology uses polyester fibres with a unique propeller-shaped cross-section which delivers excellent thermoregulation. This also makes the baselayer incredibly quick drying.Features:Materials: 100% PolyesterThin, lightweight and elastic fabricSEAQUAL™ polyester produced from recycled plasticCoolmax® Air TechnologyWaffle-knitted design for maximum moisture transport and comfortMesh inserts at armpits for enhanced ventilationFlatlock seams that follow body movementsTight fitBuy Craft Clothing from Chain Reaction Cycles, the World's Largest Online Bike Store.