# What is the lightest weight framed backpack on the market? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the lightest weight framed backpack on the market?

## Products

### Durston Kakwa 40
```yaml
product: durston-kakwa-40
brand: Durston
price_gbp: 139.6
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 770g / 795g / 820g Ultra 200X; 820g / 840g / 860g UltraGrid
capacity: 33L / 36L / 39L internal; 15L external; 48L / 51L / 54L total
frame_material: Hollow aluminum
number_of_frames: 1
adjustable_suspension: true
load_bearing_capacity: 45 lb / 20 kg
```

- **Price:** £139.6 [^1]
- **Summary:** The Durston Kakwa 40 is an ultralight framed backpack with a hollow aluminum inverted U frame, load lifters, and an adjustable hipbelt. It suits lightweight backpackers and thru-hikers who want a sub-2-pound pack capable of carrying heavier loads.
- **Ideal For:** With a medium Ultra 200X weight of 795g, one hollow aluminum frame, and a 45 lb load rating, the Kakwa 40 is a strong candidate for the lightest weight framed backpack on the market while still providing substantial load support.

### Gossamer Gear Mariposa 60 Backpack
```yaml
product: gossamer-gear-mariposa-60-backpack
brand: Gossamer Gear
price_gbp: 232.67
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 33.4 oz / 946 g
capacity: 60 L
frame_material: Aluminum
number_of_frames: 1
adjustable_suspension: true
load_bearing_capacity: 35 lb
```

- **Price:** £232.67 [^2]
- **Summary:** The Mariposa 60 is a lightweight 60-liter backpack with a removable closed-shape aluminum frame, load lifters, S-curve shoulder straps, and a pivoting hipbelt. Its multiple torso and hipbelt sizes, spacious storage, and comfortable framed carry suit weekend backpackers, thru-hikers, and long-distance trekkers.
- **Ideal For:** At 33.4 oz with a one-piece aluminum frame, 60 L capacity, and 35 lb load rating, it is a strong lightweight framed option for hikers seeking a very low-weight pack without giving up substantial carrying capacity.
- **Additional Sources:** [^3]

---
## References & Sources
[^1]: Kaviso, accessed 2026-09-13. https://www.kaviso.com/products/durston-gear-kakwa-40l-ultralight-backpack
[^2]: Outdoorline, accessed 2026-09-13. https://www.outdoorline.eu/products/gossamer-gear-mariposa-60
[^3]: Ramsey Outdoor, accessed 2026-09-13. https://ramseyoutdoor.com/products/mariposa-60-backpack-large-green