Pearl Izumi Thermal socks Merino

Transfer Merino fabric combines wool and recycled polyester for long-lasting technical performance 18.5 micron fine merino wool Repreve® recycled polyester created from recycled plastic water bottles Double-layered knit for added warmth Anatomical arch compression for a high-performance fit Flat-toe seam construction for superior toe comfortFeaturesWe understand. Most merino socks start out great and get worn out before the season is over. Ours benefit from a blend with recycled polyester that makes these socks as durable as a steel frame. They're also warm as a slipper thanks to being twice as thick as our other socks. The toe features a flat seam for comfort in comfortable cycling shoes.