VOLUME
58L (50L internal, 8L external)
PACK WEIGHT (Medium)
765g | 27oz
CARRY LOAD
HEIGHT (unrolled)
90cm | 35.4in
ULTRALIGHT WITHOUT COMPROMISE
The Framus 58L is the ultimate ultralight pack for thru-hikers and backpackers, built for long and tough adventures. With triple-stitched sewn-in hipbelt, reinforced seams for shoulder straps, high-density foam, and the most advanced fabrics on earth, the Framus is your trusted companion on the highest peaks.
Crafted from ultralight, durable fabrics with taped seams, it’s built for long adventures. With spacious side pockets, two contoured aluminium stays with a special curvature for improved ventilation, and an included removable foam padding for comfort, the Framus 58L delivers versatile storage, ergonomic comfort, and trail-ready performance.
Crafted from ultralight, durable fabrics with taped seams, it’s built for long adventures. With spacious side pockets, two contoured aluminium stays with a special curvature for improved ventilation, and an included removable foam padding for comfort, the Framus 58L delivers versatile storage, ergonomic comfort, and trail-ready performance.
THE RIGHT FEATURES
The Framus 58L is designed for comfortable, efficient load carrying, featuring a rigid frame for superior weight transfer. The pack is incredibly versatile as the frame and back foam pad can be removed when needed to transform the Framus into a frameless pack for fast and light trips requiring the lowest possible weight.
Plush, breathable shoulder straps and a supportive, wide hipbelt enhance all-day comfort, while generous storage—including large side pockets, a front mesh pocket, and a roll-top V-strap—keeps gear accessible. Built from durable, lightweight Ultra fabrics with modular attachment options and an integrated ice axe loop, the Framus 58L balances durability, stability, and versatility for demanding trips.
Plush, breathable shoulder straps and a supportive, wide hipbelt enhance all-day comfort, while generous storage—including large side pockets, a front mesh pocket, and a roll-top V-strap—keeps gear accessible. Built from durable, lightweight Ultra fabrics with modular attachment options and an integrated ice axe loop, the Framus 58L balances durability, stability, and versatility for demanding trips.
- A stable, adjustable carry system with functional load lifters and dual contoured aluminum stays that adapt to your back and shoulders for efficient load transfer.
- Enhanced ventilation by design, as the curved aluminum stays create a 2–3 cm airflow gap between the pack and your back to reduce heat buildup on long hauls.
- Convertible framed-to-frameless construction, with removable aluminum stays and optional 9mm EVA foam padding stored in an internal sleeve to fine-tune comfort or minimize weight.
- Featuring additional 8mm lumbar padding, 11mm EVA-padded shoulder straps, and breathable 3D spacer mesh in key contact areas for all-day comfort.
- Durable materials where they matter most, with UltraGrid fabric on side pockets, shoulder straps, and hipbelt, plus a reinforced Ultra 400X bottom panel for abrasion resistance.
- Secure, adaptable load control, including V-style webbing straps over the roll-top closure, full-length 4-point compression cords, and wide 38mm hipbelt webbing for stability under varying loads.
CUSTOMIZED MODULARITY
Optional
shoulder pouches and
hipbelt pockets (sold separately) integrate seamlessly via dedicated webbing loops on the shoulder straps and hipbelt, allowing you to customize your carry for quick-access essentials. The Framus 58L is also fully compatible with accessories such as the
Large Packing Cube,
Food Bags, and
Dry Bags, creating a modular system that maximizes organization, efficiency, and adaptability on the trail.
PROUDLY MADE BY HAND
Bonfus develops, tests, and produces its gear in-house, maintaining full control over every stage of the process. This hands-on approach ensures that Bonfus stands behind every product it makes and delivers consistently high-quality gear to its customers.
Each pack is meticulously inspected by Bonfus co-founder Stefania before shipment – a level of quality control that is unmatched even among cottage ultralight brands.
Each pack is meticulously inspected by Bonfus co-founder Stefania before shipment – a level of quality control that is unmatched even among cottage ultralight brands.
| SIZING | |||
|---|---|---|---|
| SMALL | MEDIUM | LARGE | |
| Torso Length | Up to 18 in 45 cm |
Up to 19.5 in 50 cm |
Up to 21.5 in 55 cm |
| Hip Belt - Hip Size* | 29.5 - 39 in 75 - 100 cm |
33 - 43 in 84 - 110 cm |
33 - 43 in 84 - 110 cm |
| Pack Weight | 26.6oz 755g |
27oz 765g |
27.3oz 775g |
*Note on hip belt sizing: measurements refer to hip girth at the height of the iliac crest (not waist girth, which tends to be smaller)
Removing the foam pad saves (Medium/Large): 35 / 40g | 1.2oz / 1.4oz
Removing the aluminium stays saves (Medium/Large): 110 / 120g | 3.9 / 4.2 oz
Choosing the correct torso size will make your pack sit more comfortably and adapt to your back.
For guidance about how to measure your torso length please refer to our guide.
| SPECS | |
|---|---|
| Volume | 58L (50L internal, 8L external pockets) |
| Suggested Carry Load | Up to 40lbs 18kg |
| Taped Seams |
|
| Ice Axe Loop + Elastic Loop |
|
| Pockets | Two large side pockets Spacious front mesh pocket |
| Unrolled Height | 35.4 in 90 cm |
| Average Circumference | 37.4 in 95 cm |
| MATERIALS | |
|---|---|
| Main Body | Ultra 200X for cutting-edge durability and performance |
| Pack Bottom | Reinforced Ultra 400X for abrasion resistance |
| Side Pockets / Shoulder Straps / Hipbelt | UltraGrid Fabric |
ADDITIONAL INFO
- Ultra 200X (130gsm | 3.85oz/sqy): Probably the most advanced pack fabric on the market. It features woven 200D UHMWPE fibers. With only a slight weight increase compared to DCF2.92, Ultra 200X offers 3× higher tear strength, 3× higher UHMWPE fiber content, and 7× the abrasion resistance. The fabric backing consists of a 0.75 mil recycled polyester film with an X-grid, making it extremely waterproof. This fabric is used as the main pack material.
- Ultra 400X (168gsm | 4.95oz/sqy): Constructed with woven 400D UHMWPE fibers and backed with a 0.75 mil recycled polyester film and X-grid for excellent waterproofing. It provides roughly twice the abrasion resistance of Ultra 200X and is used in the bottom section of the pack.
- UltraGrid (146gsm | 4.3oz/sqy): UltraGrid is woven with 210d recycled nylon yarn made from pre-consumer industrial waste. A double 5 mm 200d Ultra grid ripstop delivers exceptional tear strength and visual impact. The fabric is treated with a C0 DWR finish that contains no fluorocarbons (PFC-free) and is finished with a waterproof 1500 mm PU backing. Bluesign® approved.
Choosing the correct torso size will make your pack sit more comfortably and adapt to your back. For guidance about how to measure your torso length please refer to our guide below.
Generally, most people will have a torso length in the range 46-54cm (18″-22″).
If you fall into two pack sizes, choose the larger size. A pack that is too small will transfer too much weight to your shoulders.
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