William Ellery Lichen Socks are on ongoing research project of technical hosiery. Socks are made in small batches, and may only be produced once. New versions of this sock represent the advancements made by the findings you collect. Submit all research findings here. V 10 Public Batch 2 Notes: ***Upgraded Toe Vent Mesh*** Ingredients: 70% Super Fine Merino Wool 25% Nylon 5% Elastic Technical Details: Top welt carabiner attachment hole Lateral Snorkle Vents Dynamic Terry Seperation Nylon Crumple Zone at Foot Bend Point Elasticated Arch Tented Toe Vent Tectonic Terry Footbed Included in batch 10 is an aluminum, ultralight, carabiner for drying your socks while hiking. Carabiner color may differ from the version pictured. Not for climbing. These socks are experimental. Field test at your own risk. Made in the USA with our laboratory partner Knestknit.