Volume1 L
Dimensions14 × 23 × 6 cm
Pockets2 zipped
CarryWaist or crossbody
Topo Designs · Mountain Waist Pack 1L
One litre, two zipped pockets: round your waist or across your body.
The Mountain Waist Pack is the Topo Designs bum bag: one litre of recycled nylon ripstop, two zipped pockets and a strap made from seatbelt webbing. In town, you wear it across your body, with your phone, keys and wallet close to hand. On the trail, you shorten the strap and buckle it round your waist, hands free.
City · Travel · Walks
Phone and keys close to hand, your hands free.

Ways to carry
Crossbody or buckled round your waist: the same strap, adjusted differently.


Worn
On your front, on your back, round your waist, or hanging from a car door.
5 photos
To scale
Shorter than a phone standing upright, barely wider than an A4 sheet.
14 cm tall, 22.9 cm wide, 6.3 cm deep: it sits flat against your body.
- Waist Pack14 × 22.9 × 6.3 cm
- Phone15 × 7 cm
- A4 sheet29.7 × 21 cm
The details
Two YKK zips, and a strap made from seatbelt webbing.



The Mountain family
One litre for the essentials, or bigger to carry water.

Mountain Waist Pack 1L
1 L · 14 × 23 × 6 cm
The simple bum bag: two zipped pockets, round your waist or crossbody.
This bag

Mini Quick Pack 1.7L
1.7 L · 14 × 24 × 5 cm
Flatter: a slip pocket inside, and a loop for a bike light.
See the Mini Quick Pack
Mountain Hydro Sling
1.7 L · 16.5 × 10 × 10 cm
A crossbody bottle carrier: a bottle of up to 950 ml, and a mesh pocket on the front.
See the Mountain Hydro Sling
Mountain Hydro Hip Pack
4.4 L · 360 g · 17 × 27 × 10 cm
For hiking: two bottle pockets for bottles of up to 650 ml, and a moulded back panel.
See the Mountain Hydro Hip PackPhotos to the same scale, by the longest dimension: 22.9, 24.1, 16.5 and 26.7 cm.
Topo Designs
A sewing machine in a Fort Collins basement, in 2008.
Jedd Rose buys a sewing machine and sews the first bags in his basement in Fort Collins, Colorado; Mark Hansen asks around for people who can make them.
The two founders wanted gear like the kit they grew up with: tough, practical, classic, the opposite of throwaway and overcomplicated. The same bag goes from the city to the trail.
Topo Designs guarantees its bags against defects in materials and workmanship for a reasonable lifetime, excluding normal wear, accidents and lack of care, and would rather repair than replace. For a bag bought from Eiken, the claim goes through us.
Eiken's take
- Why we chose it
- One litre, two zipped pockets and a strap that goes from waist to shoulder: a bum bag you keep on from morning till night.
- Worth knowing
- 6.3 cm deep: room for your phone, keys and wallet, not a water bottle. For water, the Mountain Hydro Hip Pack carries two.
- Who it's for
- Anyone who wants their hands free, in town or out walking, with just the essentials on them.
Baptiste, Eiken
Specifications
- Volume1 L
- Dimensions14 × 22.9 × 6.3 cm (height × width × depth)
- Storagetwo zipped pockets
- Carryround the waist or crossbody; adjustable seatbelt webbing strap, clip buckle
- Zipsreinforced YKK
- Fabricrecycled 200D nylon ripstop; recycled 400D nylon back; recycled 210D nylon lining
- Made inVietnam, WRAP and Fair Wear certified production
- Topo Designs guaranteedefects in materials and workmanship, for a reasonable lifetime
- Topo Designs reference932432 (River Blue / Dark Pine: 932432446)
Specifications and dimensions: Topo Designs data (topodesigns.com and topodesigns.eu, October 2026); dimensions converted from inches.
Questions
What are the dimensions of the Mountain Waist Pack?
14 × 22.9 × 6.3 cm (height, width, depth), for 1 litre.
Can I wear it crossbody?
Yes: the strap adjusts to go over your shoulder with the bum bag in front of you, or shortens to buckle round your waist.
Is the Mountain Waist Pack waterproof?
No, it isn't made for rain: in steady rain, water eventually soaks through its recycled nylon fabric. Put your phone in a pouch.
Waist Pack or Mini Quick Pack?
The Waist Pack, 1 litre and 6.3 cm deep, has two zipped pockets. The Mini Quick Pack, 1.7 litres and 5.1 cm deep, is flatter and wider; it keeps small things in a slip pocket and has a loop for a bike light.
Will a water bottle fit in the Mountain Waist Pack?
No: at 6.3 cm deep, it's sized for your phone and wallet. The Mountain Hydro Hip Pack carries two 650 ml bottles; the Mountain Hydro Sling, one 950 ml bottle.









