ULA Equipment Catalyst 75L Backpack
ULA Equipment Catalyst 75L Backpack
ULA Equipment Catalyst 75L Backpack
ULA Equipment Catalyst 75L Backpack
ULA Equipment Catalyst 75L Backpack
ULA Equipment Catalyst 75L Backpack

ULA Equipment Catalyst 75L Backpack

Regular price$679.00
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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 18kg. 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! The Catalyst has consistently been among the top 5 most popular packs on the Pacific Crest Trails and the Appalachian Trail.

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 Robic adjustable side pockets make it easy to stay organized whether you're on a thru, or just out for the weekend. Weighing only 50 oz – including all the extras! – this pack will lighten you up but still handle the toughest duties.

Bottom Line? The Catalyst is a tough and light pack built for traditional backpackers.

Pack Weight

TOTAL WEIGHT: 1.324kg*

  • Listed weight is for a size medium torso with size medium hip belt. Our weights are as shipped including all the removable items.


  • REC’D MAX LOAD: 18 kg
  • REC’D BASE WEIGHT: 10kg or less

“Base weight” refers to the total weight of all gear carried — including the weight of your ULA backpack. This weight also includes things like water bottles and food stuff sacks, but not the weight of water and food as this will vary during each trip. Knowing your base weight will help you determine which suspension system will best handle your load on the trail.

Pack Volume


Breakdown (Cu In):

  • Main Body: 2,600
  • Front Mesh Pocket: 600
  • Left Side Mesh Pocket: 350
  • Right Side Mesh Pocket: 350
  • Exterior Collar: 600
  • Left Hipbelt Pocket: 100
  • Right Hipbelt Pocket: 100


  • ULA 400 ROBIC NYLON: Catalyst packs are sewn with our new ULA 400 Robic fabric, the toughest stuff ounce for ounce we’ve ever seen.


  • Internal Frame
  • Twin Stay Framesheet
  • Contoured Shoulder Straps
  • Front Shock Cord
  • Front Mesh Pocket
  • Dual Hipbelt Pockets
  • Rolltop Closure
  • Side/Top Compression Straps
  • Ice Axe/Trekking Pole Retention Loops
  • Sternum Strap
  • 400 Robic Bottom Panel
  • 400 Robic Adjustable Side Pockets


Click on the size chart link to select your Hip Belt and Torso Size: ULA Equipment Size Chart

The standard local delivery time from our store in Melbourne for orders placed before noon is 2–7 business days via Australia Post standard delivery. Express Post is also available. Please see our Shipping page for more details. International Orders are subject to flight availability.

If you'd like to know availability and delivery times for a specific item please contact us and we will get back to you asap.

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