With floral patterns and even more functionality, the Smartwool Intraknit™ Thermal Merino Base Layer Pattern Crew is engineered to enhance your performance with lighter weights and a cleaner finish. This Smartwool® base layer is 3D-mapped for a near-custom fit and freedom of movement, while ribbed elbows provide extra flex room. New technology allows designers to seamlessly knit mesh ventilation in gender-specific zones designed to help keep your body dry and warm as you zip up and venture out in comfort.Details:Slim fit Garment Weight: 180 g = 6.35 oz 3D mapping results in near custom fit and freedom of movement while ribbed elbows provide added durability Mesh ventilation seamlessly knit in gender-specific zones designed to keep the body dry and comfortable Engineered construction uses knit structures to enhance performance with lighter weights and cleaner finish Merino Sport yarn combines the power of Merino with the durability and fast dry times of polyester