About This 【Premium Material and Ultralight Weight】 700 fill power and 90% goose down fills the booties, which gives you best in class weight to warm ratios. The 20D 400T nylon liner & shell is both comfortable and ultralight weight. The product weigh in at just over 80 grams( about 2.82oz), it is easy to compress and carry. 【Multi-function】 Our booties are perfect for you enjoying winter camping, traveling. Keep Feet Toasty Warm While Sleeping In Camping Sleeping Bag, Camp Tent, RV or Around the House/Bed/Chair! Great for Sitting/Sleeping/Laying Down (Not For Walking) (Comfy Temperature: 0-15 °C/ 32-59°F). 【Unique Design】 Design with Adjustable elastic closure, the booties are convenient to put on and take off, and the elastic closure at the top of slippers can effectively prevent the cold wind from invading, constantly keep your feet warm. It is a prefect gift for you families and friends to express your concern and blessings. 【Full Coverage Warmth】 The booties length ensures that your feet and ankles are fully covered with an elastic stretch band that will prevent heat from escaping. 【3 Size Options】 Keep your feet warm on any trip no matter what with booties that actually fit your feet. There are two size (S-26*23cm/ 10.24*10.05in; M-29*23cm/11.41*9.05in; L-44*47cm/17.3*18.5in) for you to choose. Please check the size before ordering, many thanks. 【Regarding Anti-slip】Although the bottom of this product features an anti-slip design, its anti-slip performance is originally intended for outdoor scenarios. Therefore, on smooth indoor tiles or floors, the anti-slip function may not be effective and could even lead to slipping. Additionally, the sole is not thick, making it unsuitable for long-distance walking (it is acceptable for short indoor walks or campsite movement). We recommend wearing shoes or using it only when resting. Overview Brand : windhike Color : Black Occupancy : 1 Person Seasons : 3 Seasons Temperature Rating : 3 season Age Range (Description) : Adult Special Feature : Flexible, Lightweight, Waterproof Material : 90%goose down Fill Material : Down Product Dimensions : 8.3"L x 10.6"W