REI Co-op Ruckpack 40 is a well-reviewed travel pack built from recycled materials. Here's how its spec sheet compares to IronBackpack Pro 45L.
In this guide:
REI Co-op Ruckpack 40 — What It Offers
- 40L capacity (also available in 18L and 30L)
- Recycled nylon shell and recycled polyester lining, DWR finish without PFAS
- Weighs approximately 2 lb 11 oz-2 lb 13 oz
- Zip-away shoulder straps for a streamlined, travel-friendly profile
- Includes a stowable rain cover
- Price: $159
Side-by-Side: Ruckpack 40 vs IronBackpack Pro 45L
| Spec | REI Co-op Ruckpack 40 | IronBackpack Pro 45L |
|---|---|---|
| Capacity | 40L | 45L |
| Material | Recycled nylon/polyester, DWR | 900D high-density polyester, water-resistant |
| Weight | ~2 lb 11-13 oz | Not independently weighed |
| Straps | Zip-away for travel | Fixed, opens flat to 180° |
| Includes rain cover | Yes | No — water-resistant coating instead |
| Price | $159 | $99.95 |
Prices and specs reflect each brand's own listings at the time of writing and can shift with promotions or model updates.
$99.95 vs $159. 45L vs 40L.
More room. Denser fabric. $59 less.
Zip-away straps matter once a year. A 17" laptop sleeve and a 180° flat opening matter every training day. Rated 4.94★ by 50 athletes.
See the Pro 45L →Free shipping · 30-day returns · Lifetime warranty
Online Outdoor Gear Stores vs a Training-First Pack
REI is an outdoor gear co-op first and a backpack brand second. If you're shopping there, you're browsing outdoor clothing and gear from top brands alongside REI's own packs, and the Ruckpack 40 is designed for that world: hiking and camping trips, travel, and days outside.
That's a strength if your bag also carries camping gear or outdoor clothing. It's a mismatch if your bag mostly carries shoes, a lifting belt and a laptop between the gym and work. Outdoor gear is built to be light; training gear needs to survive barbells, chalk and locker-room floors.
Outdoor Gear for Mountain Sports vs Gear for the Gym
For mountain sports, weight per liter matters most, so recycled nylon with a DWR finish makes sense. For daily training, abrasion matters more, which is why the Pro 45L uses 900D high-density polyester. Same idea, different priorities: choose the outdoor gear spec if you hike more than you lift, and the training spec if it's the other way around.
Buying Used Gear or New
Used gear sections at outdoor gear retailers are a good way to save on a hiking pack. For a bag you'll load every day, new with a lifetime warranty is usually the better deal: the Pro 45L is $99.95 new and covered for life against defects in materials and workmanship.
Bottom Line
REI Co-op Ruckpack 40 is built for travelers who want a streamlined, zip-away-strap profile and recycled materials. IronBackpack Pro 45L is built for training-first daily carry: a bigger dedicated 17" laptop sleeve, a pack that opens flat for locker-room speed, and a lower price.
Comparing more premium alternatives? See Peak Design 45L Backpack Review, or check the full spec breakdown in our 45L Backpack Buying Guide.
FAQ
Is the REI Co-op Ruckpack 40 good for the gym?
It's designed primarily as a travel pack with zip-away straps for a streamlined profile, rather than compartments built around gym gear.
Does IronBackpack Pro 45L include a rain cover like the Ruckpack 40?
No. IronBackpack Pro 45L relies on a water-resistant coating instead of a separate rain cover.
Which has a bigger laptop compartment?
IronBackpack Pro 45L, with a 17" sleeve, versus a smaller compartment in the Ruckpack 40.
What's the price difference?
IronBackpack Pro 45L is $99.95; the REI Co-op Ruckpack 40 is $159.
Last rep
Train hard. Carry more. Pay less.
4.94★ from 50 athletes · Lifetime warranty · 30-day easy returns
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