Color: Blue Size: Medium Product overview These duck down foot booties are designed as a lightweight, insulated sleeping accessory to keep feet warm during cold indoor or outdoor nights. Constructed from nylon with precise stitching and filled with 90% white duck down (650% loft), they combine thermal performance and practical features for easy use. Key benefits Reliable warmth: fill of 90% white duck down and 650% loft traps heat effectively around the foot, helping maintain comfortable temperatures during sleep. Windproof seal: An adjustable drawstring cuff at the shaft blocks cold air from entering socks, reducing heat loss and improving overall warmth retention. Durable construction: nylon shell and reinforced stitching provide tear resistance and long lasting use in camping and indoor settings. Easy to use: Designed for quick on and off so they are convenient when entering or leaving a sleeping bag or tent. Stable footing: Nonslip dot pattern on the sole reduces slipping on smooth surfaces, increasing safety when moving inside a tent, RV, or at home. Balanced design: More substantial than ordinary down socks while remaining compact and comfortable for resting and light movement. Materials and performance Shell material: nylon with precise stitching for durability. Insulation: 90% white duck down with 650% loft for compressibility and warmth. Size: Medium. Color: Blue. Functional features: Adjustable drawstring cuff and nonslip sole dots. Suitable use scenarios Camping overnight: Wear inside a sleeping bag or tent to keep feet warm during cold nights at the campsite. RV or car trips: Use inside an RV or camper to maintain foot warmth while resting without bulky footwear. Home use: Slip on for extra warmth while relaxing on cold floors, in bedrooms, or during quiet evenings. Why customers choose these booties They address common coldfoot problems by combining quality down insulation with a windproof cuff to minimize heat loss. They suit multiple environments where warmth and portability matter, including tents, sleeping bags, RVs, and home use. Practical features such as easy on and off and a nonslip sole make them convenient and safer to use than typical down socks. Compatibility and fit Designed as sleeping booties and camping booties compatible with sleeping bags, tents, RV interiors, and general indoor use. Medium size offers a balance between roomy insulation and a secure fit; choose the indicated size for comfort. What is included One pair of blue down foot booties in medium size with nylon shell, 90% white duck down filling, adjustable drawstring cuff, and nonslip sole dots.