<!--ProdInc[170062315]/Mall:[rei_US]--> Ideal for long-distance travel, compression socks help increase blood flow and decrease swelling when seated for long periods at a time Gradient compression is greatest at the ankles and gradually decreases toward the tops of the socks; blood pushes upward toward your heart, maximizing circulation Moderate (15 - 20 mmHg) compression is recommended for all-day and everyday wear, prolonged sitting or standing, travel, exercise and recovery, and minor to moderate swelling Wool, nylon, bamboo and spandex blend together for fabric that fits snugly, wicks moisture, dries quickly and naturally resists odor Seam-free toe closures minimize chafing; contoured heels offer a close fit Knit spandex bands in arches provide support and reduce sock slippage on the footMade in USA. Technical specs <table border=1 cellpadding=5 style=''border-collapse: collapse;''><!--[--><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Best Use</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>Travel</p><p class=''tech-specs__value'' data-v-fc44804c=''''>Casual</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Fabric</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' data-v-fc44804c=''''>32% merino wool/32% stretch nylon/31% rayon from bamboo/5% spandex</p><!--]--></td></tr><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Sock Height</th><td class=''tech-specs__cell'' data-v-fc44804c=''''><!--[--><p class=''tech-specs__value'' <a href=''https://www.rei.com/product/873002/sockwell-circulator-compression-socks-mens'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=rei&ProdInc=170062315&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>