Ships in 1-2 business days | Based in Gainesville, GA | Est. 2010 Booties for the footies Cold feet sleeper? These down socks are the perfect solution. Made 850+ power premium goose down treated with DownTek for water-resistance, these socks are designed to keep your feet warm and comfy all night long. They also make great back-country hut footwear. Elastic ankle cuffs ensure they stay put and keep the warmth in. These socks conveniently pack into a small stuff sack (included). Features: Filled with water-resistant 850 fill goose down Ultra-light and compressible, easily tucks into the corner of your backpack 20D nylon durable outer fabric with DWR treatment 8D nylon liner fabric (Charcoal) is 100% downproof & DWR treated _______________________________________________ Sizing:  Size US Men's US Women's EU Small 5 - 6.5 6 - 7.5 36 - 40 Medium 7 - 9 8 - 10 41 - 43 Large 9.5 - 12 10.5 - 13 43 - 46   Weight: 2oz | 57g (medium) *Weight may vary due to fabric variation  Materials: Outer Fabric: 20D nylon Inner Fabric: 8D nylon Insulation: 850 fill goose down PFAS-Free Made in the USA ***Discounts are not available on Goosefeet Gear products.