New with tags. Bought for my son, didn't fit. Size: L US 9.5 - 13. Merino wool is a natural wonder that is soft, warm, and naturally moisture-wicking to keep your feet dry and cozy. Originally made for winter days, we've seen a big increase in Bombas fans wearing all of our merino styles year round. One Purchased = One Donated Features Sure-Fit CuffSure-Fit Cuff Cushioned FootbedCushioned Footbed Seamless ToeSeamless Toe Y-Stitched HeelY-Stitched Heel Honeycomb Arch SupportHoneycomb Arch Support Merino wool quarter socks : 81% merino wool 17% polyester 2% elastane