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The Gossamer Gear Murmur 36 Hyperlight represents a new benchmark in ultralight backpacking. Weighing just 7.9 ounces without padding (10.7 oz with the included torso pad), this frameless pack proves you don’t need to sacrifice durability or functionality to shed weight. At $350, it’s a premium investment designed for serious ultralight backpackers who understand that every ounce matters.
Built Different: ALUULA Graflyte V52 Technology
Traditional laminate fabrics fail the same way—adhesives break down, coatings wear off, layers separate. The Murmur 36 Hyperlight uses ALUULA Graflyte V52, a revolutionary 100% polyethylene fabric fused at the molecular level. No adhesives. No coatings. No delamination after a season of hard use.
The result? Genuine waterproof protection that lasts. Full interior seam taping ensures every connection point stays sealed, keeping your gear dry in challenging conditions. The fabric is PFAS-free and recycle-ready, manufactured using sustainable methods that align with modern environmental standards.
Capacity and Dimensions: Know Before You Go
The Murmur 36 offers 36 liters of total capacity, including external pockets. The pack body measures 20.9 inches tall (extending to 27.8 inches when the roll-top is fully extended), 11 inches wide, and 5.1 inches deep. This gives you enough space for lightweight overnight or multi-day trips when you’re carrying efficient gear.
Real talk on load capacity: This pack comfortably carries up to 15 pounds. You can push it to 20 pounds maximum, but comfort drops off. If you regularly carry heavier loads, need camera gear, or prefer more organizational features, this isn’t your pack. The Murmur 36 is purpose-built for ultralight backpackers who’ve already optimized their gear systems.
Features That Actually Matter
Front stretch mesh overflow pocket – Perfect for wet layers, rain gear, or items you need quick access to throughout the day. Keeps frequently used items off your back and easily reachable.
Cinch-top water bottle pockets – Integrated side pockets secure bottles without fumbling with straps. The cinch closure prevents bottles from bouncing out on rough terrain.
Roll-top closure with side compression – Adjust volume based on your load. The lace-up side cord compression stabilizes everything and prevents the pack from feeling saggy when it’s not fully loaded.
Quick-attach belt loops – Compatible with Gossamer Gear’s FastBelt or Blackbelt accessories if you want to add hipbelt options later. Start minimal, add only what you actually need.
Trail-tested components – Airmesh shoulder straps distribute weight comfortably. Ultralight hardware keeps things light without feeling flimsy. Multiple attachment points let you lash gear externally when needed.
Removable padding system – Ships with a 3/8-inch torso pad included (adds 2.8 oz to total weight). Also compatible with the separate Sitlight Pad 19″ if you want different padding options.
Sizing: One Size, Specific Fit
The Murmur 36 comes in one size that works best for torso lengths between 19-21 inches. This isn’t “one size fits most” marketing—it’s a specific fit range.
How to measure your torso:
- Find your C7 vertebra (the bump at the base of your neck when you bend forward)
- Locate your iliac crest (the top of your hipbones on both sides)
- Measure the distance between these two points along your spine
If you’re outside the 19-21 inch range, this pack won’t sit properly on your frame. Proper fit matters more than features when you’re covering miles with weight on your back.
Who This Pack Is For
The Murmur 36 Hyperlight works for backpackers who:
- Carry base weights under 10 pounds
- Use compact, efficient gear systems
- Understand ultralight principles and trade-offs
- Value weight savings without sacrificing quality
- Take overnight to multi-day trips with minimal gear
- Have a 19-21 inch torso measurement
Who Should Look Elsewhere
This pack isn’t right if you:
- Need to carry more than 15 pounds comfortably
- Want extensive internal organization or multiple pockets
- Require a padded hipbelt for load transfer
- Carry bulky items like cameras or climbing gear
- Prefer traditional framed backpacks
- Fall outside the 19-21 inch torso range
- Are new to ultralight backpacking and still optimizing gear
The Bottom Line
At 7.9 ounces, the GG Murmur 36 Hyperlight delivers on the promise of ultralight without the usual compromises. The ALUULA fabric technology provides legitimate waterproof durability. The streamlined feature set includes exactly what you need for efficient backcountry travel—nothing more, nothing less.
The $350 price point reflects advanced materials and thoughtful design. This pack is field-proven by Gossamer Gear ambassadors and the company’s founder, Glen Van Peski. When your gear system is dialed and every ounce counts, the Murmur 36 makes sense.
Specifications at a Glance:
- Weight: 7.9 oz (pack body), 10.7 oz (with included pad)
- Capacity: 36L total
- Comfort carry: 15 lbs | Maximum: 20 lbs
- Torso fit: 19-21 inches
- Price: $350
- Includes: 3/8″ torso pad