Anatomically designed to provide advanced plantar fascia and arch support, the Vectr Cushion Crew Sock leverages a unique X-LOCK support system to lock the foot in place and reduce blistering for your most comfortable run ever. Crew sock X-LOCK technology feature Anatomical design 25mm cushioning Anti-abrasion seamless toe construction Zoned mesh ventilation for increased breathability This garment contains recycled yarns