??Warm, Comfy & Insulated?? 90% Premium White Duck Down Filling, 800 Filling Power, Keep you Warm and Toasty. Sole is Made of imported Natural Rubber, Soft, anti-skid, Wear-Resistance, Twist-able and Keep in Shape. The Rubber Sole is 0.4in/1cm Thick, insulated and Better Supporting your Foot. Smooth Fleece insole, Waterproof Midsole Cover and EVA Cushion help to Keep Warm, Reduce Heat loss and Absorb Shock to Make you Feel Cozy.??Light and Portable?? Single Shoe Weighs is 200g ??fluffy down tight weighs 25g(M/Women US 6.5-7.5/Men US 5-6), Super Light, Reduce your Carrying Weight in your Backpacking. Come with a Flexible Storage Bag with a hook, Compact and Portable, Easy to Hang it on your Backpack or Store in your Suitcase.??Use Both Outdoor and Indoor?? Professionally Designed as Camping Boots for Outdoor Activities Such as Backpacking, Camping, Hiking, Skiing and Fishing. You Could also Wear it as Casual Slippers in House, Tent, Driving, Flight and Hotel During Business trip, Making Quick runs to the Mailbox, and Also Perfect for a Cabin During your Vacation.??Solid Made?? The Upper and Sole are firmly Sewn Together by Nylon Threads instead of inferior glue, Making it more Durable. With Adjustable Belt on Back Counter, the Down Booties Perfectly fit with your Feet size. The Shoe cut Comes up High Enough to Cover your Ankles. The Upper Fabric is Cordura Brand,lighter and Stronger, Windproof and Breathable, Keeping the Outside Cold air Away and Releasing the inside Sweat out.??Sizing?? Please choose the right size according to your foot length (heel to longest toe) with your socks on. Inner length of each Size:??M= 24cm / 9.45in, fit for Women??s US Size 6.5-7.5, Men??s US Size 5-6;?? ??L=25cm / 9.84in, fit for Women??s US Size 8.5-9.5, Men??s US Size 7-8; ?? ??XL=26.7cm / 10.51in, fit for Women??s US size 10.5-11.5, Men??s US size 9-10; ?? ??XXL=29CM / 11.42in, fit for Men??s US size 11-12??