The Compression Zero Cushion Snow Sock is the ultimate performance choice, engineered for an uncompromising, form-fitting feel and designed to facilitate blood flow and aid in muscle recovery thanks to its graduated compression (20mmHg - 30mmHg). Featuring a Zero Cushion Profile for maximum boot-to-ski responsiveness, this sock utilizes the Definitive Fit System(TM) and Foot Moulding Memory Stretch(TM) to guarantee a non-bunching, precision fit. It is crafted from the Signature Merino Blend for exceptional breathability and temperature regulation, marrying the softness of rayon from bamboo with the natural odor resistance of merino wool. Material Blend 41% Nylon, 32% Rayon from Bamboo, 23% Merino Wool, 4% Elastane Compression Rating Graduated Compression 20mmHg - 30mmHg Cushioning Zero Cushion Profile Core Fabric Technology Signature Blend of Merino Wool and Rayon from Bamboo Fit System Definitive Fit System, Foot Moulding Memory Stretch Cuff/Band Support Stay Up Cuff, Elasticated Instep Support, Ankle Band and Achilles Support Seam Type Ghost Seam, Snug Fit Heel Ventilation Mesh Ventilation, Ventilation panels for airflow Certifications 100% Certified Non-Mulesed Merino Wool, Okeo-Tek 100 Certified