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The OS1st TA6 ThinAir Performance Calf Sleeve features feature 6 zones of light compression and ultra-thin "SkinThin" zones, which are cushioned to let air flow through for ultimate comfort. With advanced shaped-to-fit, the sleeves promote circulation, flexible movement, and preventative support.
The OS1st TA6 ThinAir™ Performance Calf Sleeve features feature 6 zones of light compression and ultra-thin “SkinThin”™ zones, which are cushioned to let air flow through for ultimate comfort. With advanced shaped-to-fit, the sleeves promote circulation, flexible movement, and preventative support.
For Women's Footwear: B is the standard width. 2A is narrow, D is wide, and 2E is extra wide.
For Men's Footwear: D is standard, B is narrow, 2E is wide, and 4E is extra wide.
Kid's sizing is unisex and based on Men's sizing
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