Naturehike Ultra Lightweight Envelope Sleeping Bag for Adults, 3-4 Seasons, Waterproof Sleeping Sack for Camping, Hiking, Mountaineering, Indoor, Backpacking, Outdoor, Duck Down (295g, Blue)

ULTRA-COMFORTABLE INTERIOR: Made of 20D nylon fabric, the fabric is very smooth, soft and skin-friendly, excellent sleeping experience, as if sleeping on silk. The sleeping bag contains 295 grams of duck down, which is super fluffy and warm, so you can be as cosy as you are at home even in the wilderness. EXCELLENT CRAFTSMANSHIP DESIGN: Naturehike sleeping bag adopts the stitching process to form individual stripes of down inside the sleeping bag, which greatly avoiding down run-off and down burrowing, so that the down evenly fills the whole sleeping bag and doubles the warmth. SUITABLE FOR 3-4 SEASONS: It is super warm and can be used in temperatures ranging from -8°C-11°C/17.6-51.8°F. When temperatures are cooler, you can use the Velcro to lock the zip in place and adjust the elasticated adjustable buckle to lock in the temperature securely and reduce heat loss. THOUGHTFUL DETAILING: Features a two-way zip. You can unzip the zip and use it as a quilt, or you can link two sleeping bags together through the zip to create a double sleeping bag that you can sleep in almost any position. ULTRA-LIGHT & PORTABLE: For outdoor enthusiasts, ultralight is definitely one of the key points in picking out gear for travelling. A 570 ml bottle of water weighs 609 grams, while it is only 565 grams! Truly ultra-light! Comes with a storage bag that compresses the sleeping bag to a smaller size for easy carrying.