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.

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 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.

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.

Our packs are not waterproof.

We use highly waterproof fabrics but we do not tape the seams. Therefore some water may ingress into the pack during periods of extended rain.

Yes, even though our materials are water resistant, the seams are not taped and thus water may ingress into the pack during extended rain.

Any items that you wish to keep dry must be kept in a waterproof stuff sack or liner.

If you wanted to change the elastics then that is a quick way to update or refresh the look of your pack. You can purchase replacement elastic sets on our website:

Replacement Elastic Sets

(we do not recommend you replace the side pocket elastic unless it breaks as it is tricky to do)

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.

For mainland UK and Northern Ireland:

Small Parcel £3.95
Large Parcel £7.95 (for orders over £140)

For Isle of Man and Channel Islands, shipping is calculated at the checkout.

Please note: All items purchased from Atom Packs are subject to a lead time, any shipping times quoted start when the order is complete, not from the moment the order is placed. Current lead times can change and are displayed clearly on the site.

Accessories, when completed, are shipped to the UK using Royal Mail 1st Class. This service normally takes 1-2 days.

Backpacks, when completed, are shipped to the UK using DPD next day. This service is normally delivered on the next working day.

Keep an eye out for emails and texts from DPD.

Yes we do!