VolumeAbout 3 L
Weight210 g
CarryingAdjustable strap
OpeningDouble zip
Mero Mero · Hoïan Bum Bag
A bum bag you wear at the front, on your back or crossbody.
A double zipped opening, a mesh pocket inside, a back pocket for the phone. A wide adjustable strap and a quick-release buckle let you carry it however you like.
City · Cycling · Walks

Ways to carry it
Across the chest, in front, on your back: the same strap.



In the rain
It handles a shower, not steady rain.
Water beads on the surface of the fabric.
1000mm
The fabric
Recycled nylon, PU-coated.
- 100% recycled nylonMain fabric and lining; the main fabric is Bluesign-certified.
- PU-coated, 1000 mmA polyurethane coating on the back of the fabric.
Anything that must stay dry goes in a pouch.
The details
A back pocket for the phone, a printed lining that makes the inside easy to see.


Worn
In town or by bike, worn across the chest.
5 photos







Colour
Plain or three-colour, the lining stays printed.
Blossom Pink / Cypress Green / Dark Grey
A pink band on top, sage green on one side, black on the other.
Chai Tea / Dark Grey / Cypress Green
A mustard band on top, black on one side, sage green on the other.
Cypress Green / Aubergine / Blossom Pink
Sage green on top, aubergine on one side, pink on the other.
Dark Grey / Cypress Green / Aubergine
Black on top, sage green on one side, aubergine on the other.
Silver Pine
A muted blue-green, between sage and petrol.
Navy Blue
A deep navy blue.
Dark Grey
A charcoal grey, the most neutral.
The range
The Hoïan for everyday, the Mini Hoïan for the essentials, the Piha for the bike.

Hoïan Bum Bag
About 3 L · 210 g
Double zip and a back pocket for the phone, no roll-top.
This bag

Mini Hoïan Bum Bag
About 1 L · 115 g
The essentials in the pocket: phone, keys, papers.
See the Mini HoïanThe bags are shown to scale with one another.
Mero Mero guarantee
10years
Ten years against manufacturing defects and abnormal wear.
The 2-year legal guarantee goes through Eiken. Beyond that, and up to 10 years, you contact Mero Mero directly. Zips are covered for 2 years.
Mero Mero
Mero Mero, from Annecy to Vietnam.
Born in Annecy
Mero Mero is a French brand, born between lake and mountains. Its first bag, a messenger bag, was inspired by two children, Clémence and Léon. The brand is a member of 1% for the Planet and gives 1% of its turnover to environmental organisations.
Sewn in Vietnam
Since late 2018, manufacturing has been in Vietnam, with a partner specialised in technical stitching: paragliding canopies, harnesses, backpacks. The factory is ISO 9001 and ISO 14001 certified and passes the WRAP audit every year.
Repaired in France
The brand plans for repair from the design stage and works with workshops in France, in Annecy and Lyon.
Eiken's take
- Why we chose it
- A bum bag you wear however you like, at the front, across the chest or on your back, with two zips and a back pocket for the phone.
- Worth knowing
- It holds about 3 litres: enough to go out light, not enough to replace a backpack.
- Who it's for
- For those who go out with little, in town, by bike or on a stroll, and want their hands free.
Baptiste, Eiken
Specifications
- VolumeAbout 3 L
- Dimensions45 x 20 x 10 cm
- Weight210 g
- Main material100% recycled nylon, Bluesign-certified fabric (Canvas oxford N1000D)
- Treatment1000 mm PU coating, water-repellent, PFC-free
- Lining100% recycled nylon, printed
- OpeningDouble zipped opening
- PocketsZipped inside mesh pocket, zipped back pocket for the phone
- CarryingWide adjustable strap, quick-release buckle
- Also100% recycled nylon zip pulls, cotton labels
- Not includedLark attachments for a pushchair
Specifications, dimensions, weight and materials: Mero Mero data (meromero.fr, November 2026).
Questions
Hoïan or Mini Hoïan?
The Hoïan measures 45 × 20 × 10 cm (about 3 litres) and weighs 210 g. The Mini Hoïan, 30 × 16 × 6 cm (about 1 litre) at 115 g, has no zipped back pocket.
Is the Hoïan waterproof?
No. The fabric is PU-coated (1000 mm) and water-repellent, PFC-free: a shower will not get through, but anything that must stay dry travels better in a pouch.
Hoïan or Piha?
The Piha has a 3 to 6 litre roll-top and straps to the handlebars; the Hoïan closes with zips and is worn on its strap, for everyday use.
What does the guarantee cover?
The 2-year legal guarantee goes through Eiken. Beyond that, up to 10 years against manufacturing defects and abnormal wear, you contact Mero Mero directly. Zips are covered for 2 years.










