Hybrid Hiking socks are made from a blend of merino wool and synthetic fibers to strengthen and stretch the sock to better form to your feet. The high percentage of merino wool fabric makes the sock breathable, moisture-wicking, and deters bacteria so no stink. Hybrid-hiking socks are also lightweight when compared to traditional hiking socks and form better to your feet. While they won't fill up your boot with fabric, they are perfect for hiking shoes or sneakers to prevent blisters. Hybrid-hiking socks are the perfect sock for nearly all situations between your office desk to the top of the nearest mountain.