Backside Line
The Eco Summit Bum by ThruPacks is a thoughtfully designed bag that excels each as a standalone pack and as extra storage inside bigger gear methods.
Regardless of its compact dimension, it presents a spacious 2.5L capability, complemented by an open stash pocket on the again and varied organizational options to maintain your gadgets neatly organized. Crafted from sturdy, waterproof EPX200 cloth, this pack is good for rainy-day adventures. The worth tag feels justified, and it helps a small, US-based firm.
Whereas the principle compartment gives ample house, the strap attachment is situated towards the highest of the pack, which might trigger it to sag when loaded with heavier gadgets. The non-fixed strap presents flexibility, making it simple to connect to a backpack or swap with a unique hip belt. Nonetheless, this comfort comes with a draw back—it’s nearly too simple to take away, and we’ve despatched the pack tumbling off greater than as soon as. Moreover, the free strap could make it uncomfortable when worn as a sling bag.
To see how this pack compares to the remainder of our top-performing fanny packs, head over to CleverHiker’s information to one of the best climbing fanny packs.
How We Examined
We use this fanny pack on a number of day hikes round Idaho, in addition to on backcountry ski excursions for accessible storage. Zippers had been stress examined by overpacking and opening in fast succession to make sure there was no snagging. We additionally examined the sturdiness and abrasion resistance of the material towards 160-grit sandpaper, grime, and hand-washing. Waterproofness was examined by simulating rain and performing a fast submersion check.
Fast Spec

Thrupack Eco Summit Bum
Finest Fanny Pack for Extra Storage
CleverHiker Score:
4.5/5.0
Value:
$57-$65 (relying on pocket choices)
Measured Weight:
3.7 oz.
Capability:
2.5 L
Professionals
- Weight-to-capacity ratio
- Padded waist
- 2″ strap accessible
- Water resistant
- Suitable with most backpack hipbelts
Cons
- Skinny strap could be uncomfortable
- Sags when totally loaded
Consolation
The Eco Summit Bum is likely one of the most snug packs on our listing, that includes a padded again and padded hip belt sleeve for added consolation. Whereas we examined it with the usual 1-inch strap, ThruPacks additionally presents a Comfortable Strap™ for a good cozier match.
The pack’s rectangular, structured design maintains a modern profile, even when carrying only some gadgets, and helps stop shifting throughout use.
Nonetheless, the hip belt lacks a hard and fast attachment, which permits the pack to simply slide alongside the webbing strap. Whereas this design makes it easy to take away, it additionally causes the pack to shift round whereas climbing and makes it uncomfortable to put on as a sling bag.
Throughout a trailside break, the pack unexpectedly slid off the belt and tumbled a number of ft. For individuals who are cautious with their gear, this can be a minor situation, nevertheless it’s one thing to notice should you’re a little bit of a butterfingers.
Sturdiness
Made with EcoPak EPX 200 cloth, the Eco Summit Bum withstood the abrasion check with minor put on and tear and hid the injury effectively. There have been no damaged threads or actually any fuzzing. After being dragged by way of the grime, it did take slightly scrubbing with cleaning soap and heat water, however after cleansing, it confirmed no signal of holding stains.
There have been no obtrusive points with the sturdiness of this pack throughout testing, however two issues gave us pause by way of building. One finish of the zipper was completed and seam taped, whereas the opposite facet was merely certain with thread.
The webbing loops on the corners are sewn by way of the fabric, which on soggy days might finally permit water to breach the in any other case waterproof materials. With out seeing different ThruPack fashions, we are able to’t inform if that is an outlier – however is one thing to think about.
Options
The Eco Summit Bum is certainly weatherproof and handed our simulated rain and submersion checks with none water breaching the contents. Its zipper is high-quality, and the ergonomic zipper pulls hold fumbling to a minimal. This lineup has many choices that combine into bigger pack methods, and the Summit Bum is probably the most simple one to connect. The padded strap sleeve permits compatibility with any strap as much as 2” in width.
In case you’d prefer to hold issues off your waist, it does have extra attachment factors to clip to your pack or your hip.
Whereas it doesn’t produce other fancy options like water bottle holders, the spacious important compartment can match a 16oz bottle if you wish to be completely hands-free.
Group
Outfitted with two interior pockets and a key clip inside the principle compartment, in addition to an open-stash pocket alongside the again – the Eco Summit Bum has room to your stuff and ensures you’ll be capable to discover it.
The again stash pocket felt safer than different luggage we examined with this characteristic, because the padding saved gadgets cosy in place. Whereas our mannequin lacked an exterior mesh pocket, ThruPacks presents a number of totally different designs and a customized bag maker to make sure you get the options you need.
On par with the group methods on different luggage with comparable capability, it doesn’t really feel just like the Summit Bum is especially missing on this class. One factor of be aware is that the important thing clip seemed a bit like an afterthought, as it’s merely tied to a plastic loop with string. However, if a key clip isn’t a deal breaker for you – this model might be simple to take away.
Ought to You Purchase the Thrupack Eco Summit Bum Fanny Pack?
With its modern, minimalist design and the power to be personalized with vibrant colours and patterns, the Summit Bum is equally at dwelling at a competition as it’s on the path. Whereas it might not be probably the most budget-friendly possibility for on a regular basis carry, the value displays its sturdiness and high quality, guaranteeing it is going to final for years of use. For these seeking a traditional fanny pack design that may stand up to the weather, this pack is a incredible addition to your package.
One standout characteristic is its versatility—it might simply be connected to your backpack or worn with clips, making it a terrific selection for varied adventures, from thru-hiking to bikepacking. Nonetheless, should you’re particularly on the lookout for a bag that may comfortably double as a sling, you would possibly wish to discover different choices. Whereas the Summit Bum excels in different areas, it may be much less snug in sling mode, particularly throughout prolonged put on.
What Different Fanny Packs Ought to You Think about?
See comparable choices under, or go to our full information to one of the best climbing fanny packs for all our favorites.
Hyperlite Mountain Gear Versa Overview: For a pack that focuses on versatility of wear and tear, take a look at the Versa. This can be very snug when worn as a sling and was our best choice relating to backpack-compatible fanny packs. Though it’s listed as having .25L much less storage, the Versa seems like a blackhole and might maintain far more than necessities. It does have the next price ticket, however that displays the premium nature of the versa.
Zpacks F.U.P.A. Overview: If the backpack integration is what piqued curiosity within the Summit Bum, the F.U.P.A by Zpacks is one other good contender. It does have much less capability, so it tracks that the FUPA weighs an oz. much less. Even with the smaller dimension, the peak of the FUPA means that you can match bigger gadgets with ease. It does assist to have a Zpacks backpack or test that your buckles are suitable with the fastened ones on the pack.
Excessive Tail Designs – the Ultralight Overview: For one more possibility for a modern, no-frills pack with an attention-grabbing look – take a look at the Ultralight from Excessive Tail Designs. Whereas not customizable just like the Summit Bum, there are such a lot of colour and sample choices – you aren’t more likely to be twinning on the path. It’s in the identical value vary because the Summit Bum, so you might be paying extra for a smaller pack constituted of top-quality supplies.