The lead time for all backpack orders as of 29th June is 8 weeks.

The Atom Custom

The Atom - Made for movement

Aimed squarely at the ultralight hiker, the Atom gives you easy access to everything you need to keep hiking all day long using the five pockets that are easily accessable when worn. Frameless and hipbeltless as standard, this pack has very few load assisting features and, as such, is only intended to be used by those with dialled in gear lists who like to enjoy the freedom of a light pack and moving without a hipbelt.

We recommend that you don’t try to carry more than 9kg/20lbs total in this pack. If you are thinking that your loads might go above this, do yourself and your spine a favour and get a custom Atom with a padded hip belt or head over to the Atom+ page.

  • Dual shoulder pockets: Super stretchy and big enough to hold most smartphones, a day’s worth of snacks or a 700ml water bottle. The elastic is fixed and, owing to its clever design, does not need a tensioner.
  • Bottom pocket: Easy-access bottom pocket with trash port made with Dyneema stretch fabric.
  • Large front pocket: Made with Dyneema stretch fabric. Can hold 5L, not included in total volume.
  • Side pockets: Two forward-facing, deep and low side pockets. Each big enough to keep two 1L Smartwater bottles steady while being low enough to reach whilst the pack is worn made with 210d Robic. 2.5L each
  • Front zig-zag elastic: removable and designed to be able to store a folded Z rest or assist with air drying your clothes.
  • Side elastic with Lineloc: These are there to secure a pole or tent stakes when stored in the side pocket. If you are wanting to compress the bag, we recommend switching to a non-stretch cord.
  • Sternum Strap: Elasticated and height adjustable
  • Trekking pole loop: Small, removable elastic toggle to connect walking poles or ice axe.
  • Bear cans: 

   - 30L: most bear cans will not fit inside the 30L, either rig it on top or go for a larger volume Atom.
   - 35L and 40L: A BV450 will fit with the base to your back, a BV500 will fit vertically with a little room at the side for a stuffsack.  

  • Weight:
- 30L: 380g/13.4oz (size M, VX07)
- 35L:  400g/14.1oz (size M, VX07)
- 40L: 420g/14.8oz (size M, VX07)
  • Load Capacity: 9kg/20lbs max


  • Main body volume of the three different models are 25L, 30L and 35L respectively (measured with roll top closed and rolled 3 times)
  • Side pockets 5L
  • Large dyneema stretch front pocket can stretch to hold 5L (although this isn’t included in total volume)


Height fully unrolled: 28"/71cm
Circumference at base: 30"/76cm
Circumference at top: 33"/84cm

Height fully unrolled: 28"/71cm
Circumference at base: 32"/81cm
Circumference at top: 34"/86cm

Height fully unrolled: 31"/79cm
Circumference at base: 32"/81cm
Circumference at top: 35"/89cm


  • Your choice of body fabric (VX21 adds 28g/1oz)
  • 500d Texturised Nylon Back panel (similar to Cordura)
  • 210d Robic Shoulder straps and side pockets
  • Dyneema stretch front pocket
  • 15mm High tenacity Nylon webbing used throughout

Watch The Atom overview video

Can't decide of the Atom or Atom+ is for you? Check out our comparison video:

We can ship backpacks all over the world using UPS, DPD and Royal mail.

UK - £7.95

US - £25

Europe - £25

Canada and the rest of the world £35

* If you live in a remote location, we may occasionally need to charge a small extra surplus for shipping. This will be calculated when we ship the pack.

Taxes and Customs fees

  • UK sales: Atom Packs is registered for VAT - this means that if you live in the UK, your price will include VAT at 20%. This will be automatically calculated at checkout.
  • Non-UK Sales: Each pack that we export out of the UK has the VAT value deducted - this is calculated automatically by your shipping and billing address at checkout. Look out for the exc VAT price listed on each product page

Once your order leaves the UK and lands in the destination country, the destination country’s customs team will calculate the customs and duty owed by the recipient. Keep an eye out for contact from the postal service or UPS asking for funds before they release the package*. This will normally be a small duty charge and then your relevant sales tax (VAT equivalent) - It is your responsibility to inform yourself of these charges before purchasing, check online to find your country’s rate and what applies to you. A safe estimate would be roughly 25% of the final value of your order, including shipping.

*Customs Fees USA: Good news for our US customers, the US currently has an $800 tariff free limit on imports - this means that all but the biggest orders see no customs fees on import to the US.

We have tried our hardest to mitigate the cost to the consumer of shipping overseas but we cannot legally amend or alter the customs form to indicate a lower price, so please don’t ask us.

Delivery and failed delivery: It is your responsibility to collect your delivery in a timely fashion, if an item is returned to us as undeliverable then we will have to charge you for re-delivery - keep an eye out for emails from us detailing information about your order so you are ready to receive it.

Please make sure someone will be at the address to receive the order, our lead time is an estimate only and sometimes we may ship an item out sooner. We will gladly hold off on mailing an item if we know you won’t be in, so be sure to let us know if you are planning to be away from the address. Once the item is shipped, you can use the courier’s delivery portal to manage the delivery.

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