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.FeaturesCrew sockX-LOCK technology featureAnatomical design2.5mm light cushioningAnti-abrasion seamless toe constructionZoned mesh ventilation for increased breathability ANTI-BLISTERX-LOCK technology provides advanced arch and plantar fascia support and locks the foot in place within the sock to reduce blistering. LIGHT CUSHION2.5mm light cushioning designed to cover all the bases for most activities and help hide irregularities in footwear that could cause discomfort. ANATOMICAL DESIGNEngineered to conform to left and right structure of the foot for better fit. WIDE TOE BOXSeamless wide toe box eliminates a key irritation point and promotes natural toe splay improving balance, alignment and comfort. QUICK-DRYINGMoisture wicking yarns and zoned mesh ventilation areas keep your feet cool and dry. FABRIC COMPOSITION: 88% NYLON, 12% LYCRACOMPRESSION RATING: MODERATE: 15-20 mmhg* at base of foot