The fabric is made with a combination of recycled production leftovers to prevent as much waste as possible, creating high-quality socks that show an extra bit of kindness to the Earth. Fit & Design Standard fit hike socks Airflow venting strategically helps keep you cool and comfortable Merino wool is soft, breathable, and helps regulate temperature to cool when hot and warm when cool Seamless toe Strategic zone cushioning provides cushion where you need it Y-stitched heel creates a natural cup shape for your heel to sit comfortably Technology Hex tec socks come with performance breathability and moisture-wicking for a drier feel during intense activity Honeycomb arch support cradles your foot for a more comfortable step Sure-fit cuff fits around your leg for a more secure fit Additional Details One Purchased = One Donated: For each pair of socks purchased, Bombas donates a pair to those in need Each sock comes with a unique blend of yarns leftover from the production process, meaning no two sock colorways will be the same and variation between pairs is expected Machine wash cold on gentle cycle, use mild detergent, do not bleach, tumble dry low, do not Iron, do not dry clean, do not use fabric softeners