These fasteners help secure the roll top and ensure it remains closed while rolling down and compressing.

Adjustable 15mm webbing that can help compress the side of the pack or help to secure the top of a roll mat or tent

This simple webbing loop is there so you can pick up and set down your pack without putting excess strain on the shoulder straps. Using this will extend the life of your backpack and keep your shoulder straps in good condition.

The Y strap offers increased support for larger items like a sleeping pad or bear can when stored on top of the pack

Removable frame sheet made of 1mm thick plastic with a sewn-in 12mm / ½" alloy bar. The frame for a Medium torso length weighs 130g

Sewn-in loop to easily connect an ice axe or walking poles.

Elasticated, removable and height adjustable, on a long thru hike we recommend keeping it with the whistle facing down to prevent it getting blocked.

Removable and designed to be able to store a folded Z-rest or assist with air drying your clothes.

The closure has a 15mm vertical side compression. The roll top can also be clipped together at the top (dry bag style) and the side compression clipped around the front of the bag to aid carrying snowshoes or maybe a huge packs of chips etc.

Our S-shaped straps are designed to perfectly hug the contours of your body.

Sewn using 11mm foam, durable 210d Robic Extreema face fabric and breathable and soft 3mm thick spacer mesh.

Uses shaped 8mm closed cell foam. Can be removed when the pack is empty for a 25g weight reduction.

Helps to transfer load through to your hips. Made with 7mm EVA foam and 3mm thick spacer mesh.

Our removable shaped hip belt contours to the shape of your body for great load transfer. Featuring 4 inch (10cm) wide wings, the fit is adjusted by pulling the webbing inwards for the perfect fit.

Sewn using 11mm foam, durable 210d Robic Extreema face fabric and breathable and soft 3mm thick spacer mesh.

This hip belt is removable and interchangeable, replacements can be purchased at any time from our website.

Each pocket is 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.

The bases of all of our packs are sewn using this highly durable 400 Denier fabric in Black.

The main fabric of this pack is sewn using EPX200 fabric.

Easy-access bottom pocket featuring a large opening on the wearer's right and trash port on the wearers left.

Sewn using Dyneema stretch fabric.

This connects to the Roll top closure to allow you to compress the load of the pack

The roll top can also be clipped together at the top dry bag style, and the vertical side compression straps clipped around the front of the bag to aid carrying snowshoes or maybe a huge packs of chips etc.

Our Forward-facing, deep and low side pocket design keeps your bottles secure while still being low enough to reach into whilst the pack is worn. Each pocket can keep 2 x 1L Smartwater style bottles secure, just tighten the elastic using the pull adjuster.

Each pocket features two drain holes to stop rain collecting in them.

No, In all of our backpacks the height remains the same regardless of torso size.

So a large torso pack will have the exact same volume as a small torso pack.

Atom Packs is registered for VAT in the UK: GB329424790

All prices displayed in GBP (£) on our website will include VAT at 20%. If you are browsing our website from outside of the UK, you may shop in your local currency, in which case the price shown will be exclusive of VAT.

Customers outside the UK are not liable for UK VAT, however, you may be liable for your country’s import duties and tax.

Make sure you understand how much Customs Tax and Import duty you might pay before ordering - check out https://www.simplyduty.com/import-calculator/ for an estimate. This is a guide only.

The HS code for backpacks and accessories is 42022290

Yes! Shipping rates are calculated at checkout based on your delivery information. 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.

Full details on our shipping page.

The lead time is the estimated time between placing an order and it leaving our workshop. The lead time for new orders can always be found in the top banner on any page of our website.

If you have already placed an order, you will have received an email with an estimated shipping date, this date is still accurate unless we have emailed you saying otherwise.

Pre-existing orders can ignore any lead time updates to the website, this is relevant for new orders only.

This is a somewhat philosophical question, as, base weight has more significance the longer you are planning to hike.

In general, base weight gives you an indication of your level of packing discipline. (Remember, base weight is the total weight of everything non consumable that you will be carrying) There is no one correct base weight for each backpack, provided you are able to add enough food and water to remain under our recommended load capacity for your chosen backpack.

i.e. on a 4 day trip, along with your base weight, you would have to add 4 days of food (let's assume 1kg of food per day), to keep pack weight under 8kg total, you would need a base weight of sub 4 kg where as the same hiker on a 2 day trip could afford a 6kg base weight to remain under the 8kg total.

Your base weight is the total weight of all clothing and equipment that will be in your backpack while hiking. You should not include consumables like water, food, medicine or fuel.

i.e. the weight of an empty fuel canister can be considered for your base weight, but the fuel within it cannot.

This is our best guess at what the average person could load into this pack while still being comfortable.

This is entirely dependant on your physiology so must be taken with a pinch of salt. i.e. If you are Chris Hemsworth (Thor... Phwoar!), you may well be able to carry more weight than, say, Gollum from the Lord of the Rings.

In general, we find our limits to be fairly accurate, however, If you find yourself nearing or exceeding the number listed with any regularity, then you should probably look at a more supportive pack from our range.

Atom Packs is a small team, we quote a 2 week lead time even on in stock items to allow us to make any hip belts or accessories that go with your order, this also allows us to adapt to fluctuating demand.

In general, we aim to ship out far sooner. If you want to know before ordering when your item will ship, please contact us.

No, ready made packs are sold only as pictured, this enables us to hold them in stock and, thus, get them to you faster.

However, If you wish to customise an Atom, you can go to our customiser and build one your way!