Two integrated down sleeping bags with Big Agnes Padlok(TM) Sleep System The Lost Ranger 3N1 sleeping bag combines two sleeping bags for three different configurations - providing a sleep solution that&';s just right at a wide range of temperatures. This modular bag design offers just what you&&';;d expect: three bag configurations in one simple, yet technical sleep system that stays attached to your pad, so you won&&';;t roll off in the middle of the night. Use just outer bag for warm summer nights, just the inner bag when temperatures start to drop, and on the coldest trips combine both for ultimate warmth - it&';s the only bag you need for 3-season camping, backpacking and everywhere in between. These lightweight, down-fill bags deliver comfort and versatility no matter your sleep style or temperature preference. 3N1 System Bag offers three bag configurations for temperature versatility with a technical, roomy sleeping space that keeps you on your pad throughout the nightBig Agnes Padlok(TM) Sleep System Bags are designed to attach easily to your sleeping pad, allowing you to comfortably roll around inside without rolling off your pad - sleeping pad sold separatelyPad Cinch System is adjustable to a variety of pad sizes. Self-equalizing drawstring easily connects bag to pad and the middle securement feature provides extra stabilityMaximum thermal efficiency is achieved when inner and outer bags are layered, using offset quilting to minimize cold spotsInner bag design mimics our award-winning Sidewinder sleeping bag, designed for side sleepers and made to move with you from side to sideKeep your head snug and warm using the inner bag&';s jacket-style hoodSpacious, rectangular shaped outer bag is constructed with no-draft collar, no-draft wedge, and two no-draft, anti-snag dual side zippers with zipper garageUltimate comfort and additional hand warmth with hand tuck pockets at the top of outer bagTwo-way zipper unzips from the top or bottom of both bags, for easy temperature control throughout the nightPillow Barn attached to pad sleeve allows for natural head movement while keeping a pillow (or jacket) securely in placeIncludes mesh sack ideal for long term storage, and smaller stuff sack for active useTo pack down this bag to its minimum compressed size, we recommend pairing it with a Big Agnes Compression Stuff Sack or Superlight Girdle Total Weight:2lb 7ozISO Comfort:27AdegF (Combined) | 49AdegF (Inner Bag Only)ISO Limit:15AdegF (Combined) | 41AdegF (Inner Bag Only)Inner Bag Weight:1lb 1ozOuter Bag Weight:1lb 6ozFill Type:650 Downtek(TM) PFC-FreeInner Bag Fill Weight:9ozOuter Bag Fill Weight:8ozCompressed Bag Size:8.5" x 10"Stuff Sack Size:8" x 17.5"Max User Height:5&';6"Shoulder Girth:59"(Inner) | 66"(Outer)Hip Girth:51"(Inner) | 58"(Outer)Foot Girth:40"(Inner) | 52"(Outer)