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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
and ThermoBall fill — available in Black
Midweight knit fabric hits the sweet spot between packable and warm
ThermoBall insulation holds heat even when it gets damp
For days on the water
OS1st FS6 Performance Foot Sleeve Size:Medium and ThermoBall fill — availableA performance sock designed for active individuals who need comfort and moisture management, the OS1st FS6 Performance Foot Sleeve delivers targeted cushioning with breathable construction. The secure fit stays in place during hard efforts without bunching or slipping. Built for daily training and long efforts. Targeted cushioning for comfort Moisture wicking construction Secure, stay in place fit Breathable for temperature control Durable for daily
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