Anatomically designed to provide advanced plantar fascia and arch support, the Vectr Light 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 5mm light cushioning Anti-abrasion seamless toe construction Zoned mesh ventilation for increased breathability This garment contains recyced yarns