From OS1st:

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 Purpose®

• 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

Care Instructions: Wash gentle on cold. Tumble dry on low heat. No bleach or fabric softener.

Comes with one (1) pair of socks per package.