OS1st Running Socks Men's Running Socks Men's OS1st Running Socks

OS1st Active Comfort Crew Sock

 in style BLACK

Features

Made for staying comfortable all-day and any activity with plush bamboo charcoal cushion in the heel and toe and ultra-thin Skin Thin™ cooling panels on the top. For the best fit, it is important to use the size chart before ordering.

  • Extra cushion in the heel and toe
  • Bamboo charcoal ionized fibers for durable softness
  • Ultra-thin top panel to regulate temperature and increase air flow

Included in all Socks with PurposeĀ®

  • Micro-nylon treated with silver-ion technology to keep dry and prevent odor
  • Seamless construction and left/right design for 360-degree blister protection
  • Y-Gore heel to prevent the sock from slipping down into your shoe

Sizing

OS1st Sock Size Women's Shoe Size (US) Men's Shoe Size (US)
Small 5-7.5 4.5-6.5
Medium 8-11 7-10
Large 11.5+ 10.5-13
XL - 13.5+

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