Western Mountaineering Antelope MF Sleeping Bag – 6 ft 6 in, Left Zip, 5°F, 7 in Loft

When you venture into the high country, you want a 3-season sleeping bag that blends warmth, protection, and comfort without adding unnecessary weight. The Western Mountaineering Antelope MF Down Sleeping Bag is built for late-spring through autumn trips in the mountains, whether you're chasing a favorite peak or a remote backcountry campsite. The royal blue MicroLite XP shell signals durability and breathability while you set up at dusk, and the bag's design focuses on real-world comfort as temperatures drop.

Key design choices deliver warmth while keeping breathability at the fore. The MicroLite XP shell resists weather while allowing air to move, helping you stay comfortable in changing conditions. Inside, a full 3-Dimensional down filled collar adds snugness around the neck, and a robust draft tube helps seal out chilly drafts on those cooler nights.

Why this bag stands out

• 7-inch loft from 26 ounces of high lofting down for comfortable warmth
• 62-inch shoulder girth for a roomy, non-restrictive fit
• Full down collar plus 3-Dimensional construction for tailored warmth
• 5°F temperature rating and 26 oz down fill, designed for 3-season use
• 2 lb 9 oz total weight and 8 in x 17 in stuff size for easy packing
• Weather-resistant MicroLite XP shell with down collar sewn in MicroLite XP fabric
• 5 1/4-inch spacing with continuous baffles to keep fill in place
• Inside girth: 63 in shoulder, 53 in hip, 39 in foot for comfort

The Antelope MF is also available in a 5 ft 6 in length, offering a tailored option for different heights. In use, you’ll notice the combination of warmth and mobility: a bag that feels secure without constricting your movement, and a shoulder-to-foot profile that keeps you comfortable through long nights on cool terrain.

Seasonality, warmth, and real-world use

With a fill weight of 28 oz and a total weight of 2 lb 7 oz, this bag balances warmth and packing efficiency. A 7-inch loft traps warmth where you need it most, while the 62-inch shoulder girth helps prevent a cramped feel on restless nights. The 8x17 inch stuff size makes it straightforward to tuck into a backpack, so you can focus on the trail ahead rather than your gear.

Practical use and care

Designed for 3-season use, the Antelope MF combines rugged materials with thoughtful construction. The MicroLite XP shell is both weather-resistant and breathable, while the down-filled collar and continuous baffles help maintain loft. Rely on the reliable build for camp nights, alpine huts, and late-season expeditions where warmth matters but weight matters too.

In short, the Antelope MF Sleeping Bag offers a compelling balance of warmth, space, and portability, making it a versatile choice for campers and trekkers who value performance and comfort in the backcountry.