Here's what other sites are saying:
Do you hear that? It's silence in your tent when your bag doesn't have a zipper. The long-length Big Agnes Pin Ears SL 20 sleeping bag is a cozy cocoon with a clip-and-loop system instead of a zip.
Big Agnes Backpacking Sleeping Bags Pin Ears SL 20 Sleeping Bag (650 DownTek)-Charcoal-Long-Left. Features of Big Agnes Pin Ears SL 20 Sleeping BagThese bags offer a Big Agnes System option by using the included REM Pad Sleeve to secure your bag to the padShape allows for light weight and increased thermal valueThe REM Pad Sleeve also doubles as a storage sack vertically structured side walls integrating contoured flow baffles trap heat closer to the bodyContoured hood baffles cradle the head for a more comfortable fitOversized interior Anti-draft collarDownTek water repellent down repels water while maintaining insulating valueLow profile cordlock lets you un-cinch the hood with one handZipper GarageInterior fabric loops for sleeping bag linersExterior loops for hang drying or storageExterior loops for hang drying or storageMesh storage sack & nylon stuff sackMate together left and right zip bags
The Big Agnes Pin Ears SL 20 Degree Sleeping Bag is optimized for ultra-light backpackers looking to ditch weight without sacrificing warmth. It's rated to 20F, giving you versatility for three-season outings and milder winter conditions. The bag's minimalist design saves weight by replacing the zipper with a hook-and-clip system that's both intuitive and silent to operate. An oversized anti-draft collar wraps around the entire body to create a 3D barrier against cold spots. It's stuffed with DownTek 650-fill insulation, which maximizes lofting power while improving compression for compact carrying in your pack. To handle wet conditions, the down insulation features a hydrophobic treatment that repels outside moisture from compromising its heat-trapping loft. For even greater warmth, vertically structured sidewalls with diagonal baffles wrap around your body, much like a cozy cocoon. Another nifty design feature is the half-pad sleeve, which keeps you secure while allowing your feet to freely move.
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