Redefine Lightweight Warmth for Spring 2025
By Charlie Pankey | Sierra Rec Magazine
If your spring and summer adventures are calling you into high alpine terrain—or simply far from the beaten path—you’re going to want to travel lighter and sleep warmer. And this season, Mountain Equipment, the long-respected British brand born from the passion of alpine climbers, is introducing a new sleeping bag collection that hits the sweet spot for lightweight, performance-driven gear.
Introducing the Xenith Collection—Mountain Equipment’s lightest sleeping bags to date, designed for alpine explorers, fastpackers, and thru-hikers who count every ounce but refuse to compromise on warmth or comfort.
Featherlight, Mountain-Ready
Building on the momentum of their award-winning Oreus Jacket, Mountain Equipment’s Spring 2025 Xenith line includes three down sleeping bags, each crafted with 900-fill RDS-certified goose down and their ultra-light PLASMA 10D fabric—engineered to breathe, insulate, and resist the elements with a PFAS-free DWR finish. These are no-nonsense tools for mountain living, where low weight and high function rule the day.
From minimalist summit pushers to chilly shoulder-season backpackers, there’s a Xenith built for your Sierra itinerary:
🏕 Xenith I – For the Ultralight Minimalist
- Weight: 360g / 13oz
- Temp Rating: 5°C / 41°F
- MSRP: $419.95
This hoodless design is for the no-frills adventurer who’s looking to shed every extra ounce. Think fast and light summer trips through Desolation Wilderness, quick strike missions into Yosemite’s high country, or emergency bivy-ready setups for trail runners. Despite its weight, it still sports a well-shaped footbox and stitch-through back for comfort.
🏔 Xenith II – For High Sierra Explorers
- Weight: 470g / 17oz
- Temp Rating: 1°C / 34°F
- MSRP: $519.95
Heading up into Carson-Iceberg, Mokelumne, or Hoover Wilderness and expecting those crisp alpine nights? The Xenith II gives you more warmth, with a 5-baffle anatomical hood and a beefed-up footbox to help you stay cozy when the temps flirt with freezing—without tipping the scale.
❄️ Xenith III – For Cold Weather Pushes & High Altitude Comfort
- Weight: 690g / 24oz
- Temp Rating: -7°C / 19°F
- MSRP: $679.95
This one’s built for the high-risk, high-reward nights—think shoulder-season Sierra traverses, fall alpine hunting trips, or early spring trips into John Muir or Ansel Adams Wilderness. With slant baffles, a 4-baffle footbox, and serious down fill, it keeps you warm in sub-freezing temps, all while staying under 1.5 pounds.
Each Xenith model comes with a roll-top stuff sack and storage cube, plus long versions for taller adventurers. The technical features, down quality, and streamlined alpine fit make this a standout series for spring/summer 2025—and ideal for anyone planning to go farther, faster, and lighter across the Sierra Nevada.
If you’re building your ultralight setup or dialing in gear for your next backcountry trip, the Xenith collection is worth a serious look.
📍More Info: us.mountain-equipment.com
🛒Available Spring 2025
