The Roo RE (Black)


Typically ships within 2 weeks

In town or on trail: you decide. 

Say what you like, Bum Bags are back and this time they are here to stay.

The Roo RE (Black) is our go everywhere bum bag, designed to be used either on its own, or as a compliment to your backpack when out hiking. In town or on trail: you decide. 

The Roo enables you to have everything you need, right there at your fingertips.

Available in two size options, The Roo is ready for action.

 Standard Large
Volume 1.5L 2.5L
20cm / 8" 20cm / 8"
13cm / 5" 13cm / 5"
Depth 6cm / 2.5" 8.5cm / 3.3"
Weight 86g / 3oz 96g / 3.4oz

Large zip
Large (5mm) YKK aquaguard zip opening allowing easy access.

Deep side panels
More usable space inside the pack with 5cm / 2.5" deep side panels.

Stretch front pocket
Lycra powernet stretch front pocket with rolled over elastic. Good for lip balms, sunscreen, trail bars, etc.

Internal sleeve pocket
Low profile internal sleeve pocket. Good for organising smaller items like bank cards, valuables etc.

Key hook
Handy for securing your keys, the hook is fixed inside the opening.

Soft feel strap
The 20mm soft feel nylon webbing waist strap secures to a side release buckle on the wearer's right-hand side.

Water resistant
Whilst the Roo is built using waterproof fabrics and uses an aquaguard zip, it is not seam sealed. Some water could ingress in heavy rain - you should always protect your electronics.

Customer Reviews

Based on 8 reviews
George Lockhart

I purposely bought the 2.5L version as I was heading out on a long distance hike but travelling by public transport which I dont normally do. The Roo was perfect for the job, whilst my pack was overhead in the luggage rack I had everything I needed at hand in my Roo, a perfect companion to any pack, whilst hiking I simply had it slipped to one side of my belt acting as a hip belt pouch, again perfect & so glad that I bought it.


Excellent product

Roo pack is great as is Atom Packs customer service

Having seen a few video reviews of these I ordered myself one late on Wednesday afternoon, it was shipped Thurdsay and arrived Friday.

Now to the pack itself it's the perfect size for carrying the essentials and i'll be using it on the West Highland Way. It would also be great when travelling for keeping money, passport etc and works well slung over your shoulder too. It's really well made and I love the simplicity of the design but also the little extras like the loops that could be used to clip something on with a caribiner and the front mesh pocket is great for quickly stashing something and the separate internal pocket with key clip is great for, well, keys!

Can highly recommend both the product and company and when it comes to upgrading my backpack i will definitely be looking an Atom Pack.

Ed Lehmann
Seventh time lucky!

I have bought half a dozen waist packs over the years, and have found them a mix of too cumbersome, too awkward and/or too uncomfortable.

Then came The Roo (the 2.5 litre version).

I have been wearing it every day, both at home and at work (on a transport ambulance) for a little while.

It is so well designed I sometimes forget it is there.
Tomorrow it will have spare pens, spare medication, keys, phone, a headtorch and 4 energy bars - quite a decent load.
It will hang comfortably on the hips (low/loose or high/tight) or over a shoulder.
It will take a 500 ml bottle easily, with plenty of room for other stuff.
And the design of the inside and outside pockets, with their "retention straps" to hold things in place, is just neat!

I find the combination of capacity, convenience, comfort and "forgetability" utterly awesome.
Very much recommended.

Joanna A
Perfect hipbelt pocket replacement

Stupidly I bought a rucksack with no hipbelt pockets and nowhere to sensibly attach them. On a recent tour of Norway the Roo (1.5l) has proved to be a great replacement for that but also an excellent travel bag for easy access to snacks, phone, money, passports, tickets etc. Well made and with a clean, modern design, I wore it everywhere. The only thing is now I'm tempted to come back and buy the larger one...