Skip to content
The lead time for all new custom orders is 12 weeks.
Stock backpacks and accessories ship on a 2 week lead time.
Search
  • Ultralight Packs
  • Custom Packs
  • Ready Made Packs
  • Accessories
  • Our Story
  • Help
Atom Packs
Account Search Cart
  • Ultralight Packs
    • The Prospector
    • The Notch
    • The Pulse
    • The Atom
    • The Nanu
  • Custom Packs
    Designed by You
    Custom Packs

    Get the benefit of our tried-and-tested packs tailored to your exact needs and colour choices.

    Customise Your Pack
  • Ready Made Packs
    Ready to Go
    Ready Made Packs

    In stock and ready to go. These are one-offs from cancelled orders or experiments so get them while you can.

    Shop Ready Made Packs
  • Accessories
    Trail Extras & Essentials
    Accessories

    Hipbelts, frames, straps, shoulder pockets and the world famous Roo bum bag. Plus stickers.

    Shop Accessories
  • Our Story
    A Journey of 13,000 Miles
    Our Story

    Hidden away on a farm just outside of Keswick, you’ll find us pottering away, busily making lightweight custom backpacks for your next adventure.

    Read Our Story
  • Help
    • Guides
      • Pack Guide
      • Size Guide
      • Fit Guide
      • Fabric Guide
      • More Guides
    • Service
      • News
      • FAQs
      • Shipping
      • Returns
      • Contact
    • How to get your measurements
    • About our fabrics

International Shipping

We ship worldwide. See full details.

Need Help?

Check out our FAQs for help buying an Atom Pack.

The Prospector

The Prospector (Previously known as The Mo)

Lightweight design. No compromise.

This pack is the culmination of everything that we have learned over the years, both as backpack users and as makers. If you need a lightweight, rugged, fully-featured backpack that you can rely on to haul whatever load you can fit in it, then the Prospector is the backpack for you.

The Prospector EP50 (Black)
£275.00
Sold out

4.88 / 5.0

26 reviews
The Prospector (Custom)
£325.00

4.98 / 5.0

45 reviews
The Prospector EP60 (US Navy)
£295.00
Sold out

5.0 / 5.0

11 reviews
Atom Packs

Ultralight long distance backpacks, custom made to order in Cumbria.

Quick links
  • Contact
  • Shipping
  • Terms & Conditions
  • Warranty and Repairs
  • Refund Policy
  • Join Our Team
  • Privacy Policy
  • CCPA
Newsletter

    American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard PayPal Shop Pay Union Pay Visa
    • YouTube
    • Facebook
    • Instagram
    • United Kingdom (GBP £)
    © 2025 Atom Packs.