Marmot Trestles 15° Sleeping Bag Don't let a questionable forecast cancel your plans. The Trestles 15° is a three-season sleeping bag built to perform in cold and damp conditions across a wide range of pursuits — backpacking, trekking, mountaineering, or a straightforward overnight. SpiraFil® high-loft synthetic insulation keeps you warm even when things get wet, while a combination wave-construction top and blanket-construction bottom deliver the right balance of loft and comfort where it counts. Zip up the full-length two-way YKK zipper, pull on the 3D hood, and let your feet stretch out in the roomy anatomical footbox. Too warm? The fold-down secondary zipper handles ventilation without the hassle. A stash pocket keeps small essentials within reach, and the whole bag packs down into an included compression stuff sack. Overview SpiraFil® high-loft synthetic insulation performs in cold and wet conditions Full-length locking YKK two-way zipper with anti-snag slider Fold-down secondary zipper for added ventilation and easy access Wave-construction top for maximum loft; blanket-construction bottom for comfort under the body Anatomically designed 3D footbox for extra warmth and room 3D hood construction Snagless insulated draft tube Stash pocket and two hang loops Compression stuff sack included EN tested 3-season Specifications Regular Long Style Number 23530 23730 Temperature Rating 15°F | -9°C 15°F | -9°C Tested Comfort 27.3°F | -2.6°C 27.3°F | -2.6°C Tested Limit 16.0°F | -8.9°C 16.0°F | -8.9°C Weight 3 lbs 6.1 oz | 1,535g 3 lbs 11.8 oz | 1,695g Shoulder Girth 62" | 158cm 64" | 163cm Hip Girth 57.1" | 145cm 59.1" | 150cm Footbox Size 46.9" | 119cm 48.0" | 122cm Compressed Volume 768ci | 12.6L 915.4ci | 15L Pack Volume 1,349ci | 22.1L 1,349ci | 22.1L Stuff Sack Size 18.9 x 9.4" | 48 x 24cm 18.9 x 9.4" | 48 x 24cm Zipper Location Left Zip Left Zip Seasons 3-Season 3-Season Materials Insulation: SpiraFil® Synthetic Sheet. Lining: 70D 100% Polyester, 2.2 oz/yd. Design Features Full-length locking YKK two-way zipper with anti-snag slider Fold-down secondary zipper for ventilation Wave-construction top and blanket-construction bottom Anatomical 3D footbox 3D hood construction Snagless insulated draft tube Stash pocket Feely drawcords Two hang loops Compression stuff sack included Care Instructions If your bag is down filled, we recommend washing the item with Nikwax Down Wash Direct in a large front-loading washing machine usually found at laundromats. Then, dry the bag on low heat for at least 1 hour with 2-3 tennis balls or thick rolled up socks to re-fluff the down. If your bag is synthetic filled, we recommend washing the item with Nikwax Tech Wash in a large front-loading washing machine usually found at laundromats. Then, dry the bag on low heat for at least 1 hour with 2-3 tennis balls or thick rolled up socks to re-fluff the insulation. Built for wherever the trail takes you — reliable, versatile, and ready when the weather isn't.