#9 on this list
The Ultralight
High Tail Designs
The High Tail Designs The Ultralight Fanny Pack is engineered for weight-obsessed backpackers who view every single gram as an unnecessary burden. Tipping the scales at an astonishing 1.8 ounces, it is the lightest dedicated waist pack on this list, stripping away every excess feature in favor of pure, streamlined utility. Despite its airy weight, performance does not cut corners on weather protection. Constructed from Dyneema Composite Fabric with fully taped seams and a water-resistant zipper, this pack provides a near-watertight enclosure for critical trail electronics, wallet, and trail permits. Its exterior often showcases artistic, vibrant sublimated prints, a welcome aesthetic departure from standard outdoor earth tones. With 1 liter of volume, this pack is designed strictly for pocket essentials: a smartphone, mini sunscreen, pocketknife, lip balm, and a couple of snack bars. Its featherlight 1-inch webbing strap is unpadded and smooth, designed to ride cleanly over hiking shorts without chafing. If you need to pack extra layers or a beverage, this is not the right tool, but for minimalist thru-hiking, it is an elite execution. **Highlights** - Class-leading 1.8 oz ultralight construction - Dyneema Composite Fabric with fully taped waterproof seams - Water-resistant zipper protects sensitive trail electronics - Low-profile profile sits cleanly without restricting trail strides - Distinctive graphic prints and clean aesthetic **Watch-outs** - Compact 1-liter space requires strict discipline on gear volume - High price per liter of storage capacity
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#10 on this list
Summit Bum Classic
Thrupack
The Thrupack Summit Bum Classic is built from the ground up by thru-hikers specifically for continuous, multimonth trail life. Rather than adapting an urban fanny pack for the woods, Thrupack designed the Summit Bum to withstand the specific abrasions, moisture, and daily friction encountered on long National Scenic Trails. The pack features a 9 x 5 x 3 inch chassis constructed from heavy-duty technical laminates like X-Pac or Ultra, giving it exceptional abrasion resistance and high water repellency. Inside, elastic loops and dividers keep small gear like pocket knives, lighters, and sanitizers from rattling around. An integrated rear port allows you to run a charging cable directly from an internal battery bank to your phone mounted on trekking poles. A standout aspect of the Thrupack system is its strap ecosystem. While it comes with a standard webbing strap (weighing roughly 3.5 ounces total), it can be paired with their optional "Comfy Strap"—a wider, breathable elastic band that absorbs hip movement and dramatically reduces bouncing over rough terrain. The trade-off is that upgrading straps increases the total cost and weight. **Highlights** - Purpose-built geometry developed specifically for long-distance thru-hiking - Durable technical laminate fabric (X-Pac / Ultra) resists trail abrasion - Internal elastic organization keeps small items upright and quiet - Headphone or charging cable pass-through port on the pack body - Modular strap compatibility including high-comfort elastic options **Watch-outs** - Premium harness options add weight and increase the overall price - Limited volume requires packing bulky trail items elsewhere
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Specs side by side
| Spec | The Ultralight | Summit Bum Classic |
|---|---|---|
| Base Weight | 1.8 oz (51 g) | 3.5 oz (standard strap) |
| Capacity | 1.0 L | — |
| Primary Material | Dyneema Composite Fabric (DCF) | — |
| Seam Treatment | Fully taped seams | — |
| Closure | Water-resistant zipper | — |
| Strap Style | 1-inch unpadded webbing | — |
| Upgraded Weight | — | 4.7 oz (with Comfy Strap) |
| Dimensions | — | 9 x 5 x 3 inches |
| Materials | — | Technical laminates (X-Pac / Ultra) |
| Base Price | — | Approximately $65 |
| Organization | — | Internal elastic loops and cable port |
What our reviewers liked and didn't
The Ultralight
- Class-leading light weight at just 1.8 ounces
- Highly weather-resistant Dyneema fabric with taped seams
- Low-profile webbing sits cleanly under backpack hipbelts
- Durable tensile strength relative to its minimal weight
- Strict 1-liter volume offers minimal carrying flexibility
- High price tag relative to usable storage volume
- Unpadded webbing can dig in if packed with dense items
Summit Bum Classic
- Resilient technical laminate construction resists heavy trail abrasion
- Internal elastic loops and cable pass-through port keep gear organized
- Modular strap system adapts to standard webbing, elastic, or chest carry
- Low-profile profile prevents bouncing during steep hiking ascents
- Limited volume cannot accommodate water bottles or packable jackets
- Upgrading to the elastic Comfy Strap adds extra weight and expense
- Higher price point than standard mass-market nylon waist packs
Prices change constantly — the figure shown is the last verified catalog price, and the buy buttons always go to the current listing.