3N1 System Bag offers three bag configurations for temperature versatility with a technical, roomy sleeping space that keeps you on your pad throughout the night.
Big Agnes Padlok™ 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 separately
Pad 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 stability
Maximum thermal efficiency is achieved when inner and outer bags are layered, using offset quilting to minimize cold spots
Inner bag design mimics our award-winning Sidewinder sleeping bag, designed for side sleepers and made to move with you from side to side
Keep your head snug and warm using the inner bag's jacket-style hood
Spacious, rectangular shaped outer bag is constructed with no-draft collar, no-draft wedge, and two no-draft, anti-snag dual side zippers with zipper garage
Ultimate comfort and additional hand warmth with hand tuck pockets at the top of outer bag
 
Two-way zipper unzips from the top or bottom of both bags, for easy temperature control throughout the night
Pillow Barn attached to pad sleeve allows for natural head movement while keeping a pillow (or jacket) securely in place
Includes mesh sack ideal for long term storage, and smaller stuff sack for active use
To pack down this bag to its minimum compressed size, we recommend pairing it with a Big Agnes Compression Stuff Sack or Superlight Girdle