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ULA Catalyst Backpack


WEIGHT: 48 OZ | 1,361 GM
VOLUME: 4,600 CU IN | 75 L
MAX LOAD: 40 LBS | 18 KG

A full featured, full suspension internal framed pack, the Catalyst remains the tried and true workhorse of the ULA pack line.



The Catalyst remains the tried and true workhorse of the ULA pack line. No matter where the adventure takes you, the Catalyst will be there – ready to carry loads of up to 40 pounds. If you are looking for a pack that will haul a bear canister, or carry your fishing, climbing or photo gear with ease, the Catalyst is an excellent choice. Not only will it carry a good sized load, but it can also be checked as baggage on a plane!

Internal frame with a twin stay framesheet, comfy padded hipbelt, and contoured shoulder straps make for all day comfort even when you’re loaded down. Front mesh pocket, dual hipbelt pockets, and 210 Ripstop adjustable side pockets make it easy to stay organized whether you’re on a thru, or just out for the weekend. Weighing only 48 oz – including all the extras! – this pack will lighten you up but still handle the toughest duties.

Original Green, Black, Red, Orange and Purple Blaze packs are sewn with our new ULA 210 Robic Fabric, the toughest stuff ounce for ounce we’ve ever seen. The Multicam Camo pack is sewn with 500 Cordura Fabric. The Cordura is not quite as tear resistant and a little heavier than the Robic, adding an extra 2 oz to the total pack weight. Either way, this is one tough pack that will give you years of hiking bliss, even if you are a bit tough on your gear.

Bottom Line? The Catalyst is a tough and light pack built for traditional backpackers. For more information, please see the short video under the video tab.


Removable features are in bold.

  • Internal Frame
  • Twin Stay Framesheet
  • Contoured Shoulder Straps
  • Front Shock Cord
  • Front Mesh Pocket
  • Dual Hipbelt Pockets
  • 210 Ripstop Adjustable Side Pockets
  • Rolltop Closure
  • Side/Top Compression Straps
  • Ice Axe/Pole Retention Loops
  • Bear Canister Capable
  • ULA 210 Robic
  • Cordura Bottom Panel
  • Hydration Sleeve (1.4 oz)
  • Internal Stash Pocket (1.1 oz)
  • Water Bottle Holsters (0.8 oz)
  • Handloops (0.8 oz)


Additional information



Torso Size

Small 15 – 18", Medium 18 – 21", Large 21 – 24", X- Large 24"+

Shoulder Straps


Hipbelt Size

X-Small 26 – 30", Small 30 – 34", Medium 34 – 38", Large 38 – 42", X-Large 42" +


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Orders are shipped USPS Priority Mail next business day. We accept returns on unused merchandise. Books must still be shrinkwrapped. If the original order received free shipping and or a promotional Yogi Handbook, and following the return it no longer qualifies. Shipping will be charged at $5.00 and the Yogi's Handbook will be charged at $40.00. Contact us for return instructions 559.850.4453