An ultra-lightweight, performance-oriented option for thru-hiking or trail running, close-fitting Outdoor Research Ferrosi Hybrid gaiters use a combination of fabrics to keep out debris, deliver temperature regulation, and provide water-resistance, abrasion-resistance, and breathability. The center front of the gaiters is a highly breathable recycled polyester and elastane knit jersey. The bluesign-approved 90D blend of nylon and spandex at the rear ankles is water-resistant, wind-resistant, and abrasion-resistant. This combination of fabrics allows the gaiters to dry quickly, achieves a UPF 50+ sun rating, and offers movement-mirroring stretch. ActiveIce technology actually lowers skin temperature by utilizing endothermic cooling when wicking moisture. The gaiters' low-profile design best pairs with trail shoes and running shoes. To ensure a proper fit, the gaiters have front shoelace hooks, elastic top hems, and replaceable Hypalon instep straps. Outdoor Research Ferrosi Hybrid Gaiters are available in your choice of size and color options.