• Nylon
• Imported
• NOTE: The SP400 does not have a U Neck Collar or windshield strip, the SP700 only has one windshield strip, and the SP1000 has two
• PREMIUM RDS&IDS CERTIFIED DOWN: The new 2025 Snowbird model sleeping bags are made from traceable down and certified by RDS Professional. Each item's label can be scanned to track the origin of the down. Selected high quality 650 fluffy duck down with 85% down content and fill weights of 400/ 700/ 1000 grams respectively, and tested by IDS in the USA
• WARMER PROFESSIONAL DESIGN: Thickening of the three-dimensional wind barrier can effectively prevent cold spots caused by zip gap. The design of wind blocking strip can be tightly wrapped by blocking the convection with external cold lips around the cap. U Neck Collar for better neck warmth. Internal pocket for cell phone and other small items to prevent frostbite. Everything is designed to maximize your heat retention
• C-SHAPED WRAPPED DESIGN: The sleeping pad adopts C-shaped wrapping design, U-shaped cap cover, YKK two-way zipper, and the ratio of upper and lower pieces is 6:4, allowing more down cover on the top of the body, keeping warm and comfortable performance of sleeping bags. Minimizes difficulty in thermal control during poor weather. 3D foot space allows the foot to move more freely
• Sizes and temperatures available: There are three models of SP400/ SP700/ SP1000 available, corresponding to the comfort temperature scale of 38.84/ 18.86/ 12.55℉ respectively. Each model is available in short and regular sizes: 74.8 x 29.5in and 80.7 x 31.5in respectively, please refer to the size pictures for the exact storage size and weight of each model. You can choose the best sleeping bag for outdoor ambient temperature
• TIPS FOR USE: In order to better utilize the warm function of the sleeping bag, it is recommended to unfold the sleeping bag the day before use to make the down fluffier, and then store the sleeping bag before departure to take it away. It is recommended to use the sleeping bag together with a Naturehike sleeping pad to maximize the warmth of the bag