{"product_id":"ultralite-left-zip","title":"Ultralite Left Zip","description":"\u003cp\u003eThe UltraLite is a three-season ultralight sleeping bag built for backpackers who want premium warmth without added weight or volume. Weighing just 1 lb 13 oz, it delivers award-winning performance for everything from weekend trips to thru-hikes.\u003c\/p\u003e\n\u003cp\u003eThis bag uses 850+ fill power ethically sourced goose down for excellent loft and compressibility. The down insulation provides reliable warmth for cool nights across spring, summer, and fall conditions.\u003c\/p\u003e\n\u003cp\u003eThe ExtremeLite™ shell fabric is ultralight, breathable, and tightly woven. It helps keep moisture out while allowing internal humidity to escape. It’s one of the lightest, most efficient shell fabrics available today.\u003c\/p\u003e\n\u003cp\u003eThe efficient mummy shape improves thermal retention while minimizing unnecessary material. A full down-filled draft tube seals in body heat along the zipper. The hood cinches tight for added warmth when the temperature drops.\u003c\/p\u003e\n\u003cp\u003eThe UltraLite is ideal for trails like the John Muir Trail, the Colorado Trail, or any high-mileage route where performance matters. It packs small, sleeps warm, and holds up to repeated use.\u003c\/p\u003e\n\u003cp\u003eWhether you’re chasing ultralight efficiency or dependable comfort in the backcountry, the UltraLite is ready to go the distance.\u003c\/p\u003e\n\u003cp\u003eProudly made in the USA, the UltraLite is one of Western Mountaineering’s best-selling and most trusted bags. It’s light enough for fast missions and warm enough for real nights in the mountains.\u003c\/p\u003e\n\u003cp\u003eWhen you need one bag to do it all—this is it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFEATURES:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFilled with 850+ Fill Power ethically-sourced premium goose down\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eContinuous baffles allow you to shift down for more insulation in colder weather\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull-length #5 YKK zipper provides a smooth, easy unzipping experience while saving weight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsulated Draft Tube blocks cold air and keeps the torso better insulated\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBreathable 12 denier ripstop nylon outer shell makes bag ultralight yet durable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFully insulated draft collar seals in inner heat without adding much weight\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eComes with ultralight stuff sack and breathable storage bag\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e1 lb 13 oz. Total Weight\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Western Mountaineering","offers":[{"title":"6'0\" LZ","offer_id":53408419840282,"sku":"8453","price":680.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0219\/8156\/files\/Ultralite-Top-Closed-zipper.webp?v=1794261268","url":"https:\/\/shop.alpineinstitute.com\/products\/ultralite-left-zip","provider":"The Equipment Shop at American Alpine Institute","version":"1.0","type":"link"}