REI Co-op Flash Air 50 vs Durston Wapta 30
Quick take: The REI Co-op Flash Air 50 carries more (50 vs 30 liters); the Durston Wapta 30 is lighter (1.14 vs 2 lbs).
Which one to buy
The same $299 buys two very different ideas of ultralight. The Flash Air 50 is REI's framed pack: a shaped spring steel frame with a foam padded back, 50 L, 2.0 lbs, and REI rates it to 20 lbs, with loads around that its comfort zone. The Wapta 30 is Durston's frameless fastpack in ALUULA Graflyte, a waterproof UHMWPE laminate, holding 30 L in the medium body plus roughly 16 L in external pockets at 1.14 lbs. Durston puts its comfortable ceiling below 25 lbs and designs it around a sub-10 lb base weight.
The Flash Air's case is the return policy: you can try it on in a store, take it out and bring it back if the fit is wrong, which no made-to-order cottage pack allows. Its spring steel frame flexes and returns rather than taking a set like aluminum stays, though severe overloading can still bend it. The catch is rain, since its UHMWPE ripstop is woven and wets through, so run a liner.
The Wapta answers with fabric and sizing. Its laminate body is waterproof and highly tear-resistant, it comes in three torso sizes from 15 to 21.5 in, and its hipbelt comes in two ranges, 28-48 in and 32-52 in. Strip the belt and it weighs 13.6 oz. There is no frame or back pad, so you pack a sleeping pad or soft items against your back, and its airmesh strips won't stop a sweaty back. For a sub-10 lb base weight, the Wapta is the more refined pack. For a first ultralight pack, or if you want a frame and padded back, the Flash Air is the safer buy, though its 20 lb rating sits below the Wapta's ceiling.
REI Co-op Flash Air 50
Made for hikers moving into ultralight who want a real frame, a padded back and the ability to return the pack if the fit misses.
Durston Wapta 30
For fastpackers and hikers with a sub-10 lb base weight who want a waterproof laminate and precise torso and hipbelt sizing.
| Spec | REI Co-op Flash Air 50 | Durston Wapta 30 |
|---|---|---|
| Price | $299 | $299 |
| Rating | 4.1★ (49) | — |
| Type | Ultralight Pack | Ultralight Pack |
| Frame Type | Internal Frame | Frameless |
| Capacity | 50 L | 30 L |
| Weight | 2.0 lbs | 1.14 lbs |
| Max Load | 20 lbs | Below 25 lbs (12 kg) |
| Torso Fit | Sized S, M, L; no torso adjustment | Sized S 15-17.5 / M 17-19.5 / L 19-21.5 in; hipbelt S/M 28-48 in or M/L 32-52 in |
| Material | UHMWPE ripstop nylon | ALUULA Graflyte V-98 (100% UHMWPE laminate) with ALUULA Durlyte HH-190 daisy chains |
| Back Panel | Spring steel stays with foam padded back | Dual airmesh ventilation strips, no pad or frame |
| Adjustable torso | No | No |
| Ventilated back | No | No |
| Raincover included | No | No |
| Hipbelt pockets | Yes | Yes |
| Removable lid | No | No |
| Hydration sleeve | No | No |
| Fits BV500 bear can | No | No |
| Warranty | REI satisfaction guarantee: returns within 1 year for members (90 days for non-members); defects in materials or workmanship returnable at any time | Durston warranty: defects covered for the period shown on the product page (none stated on the Wapta 30 page); free repairs for wear and damage |
Pros & cons
REI Co-op Flash Air 50
- ✓Backed by REI's return policy, which is uniquely valuable in a segment where most packs are made to order.
- ✓A shaped spring steel frame flexes and returns rather than taking a set like aluminium stays.
- ✓UHMWPE ripstop gives gridstop-style tear resistance.
- ✓32 oz for 50 L is competitive with cottage packs at similar prices.
- ✓Available to try on in person at REI stores, which no cottage pack is.
- ✓$299 sits mid-range for the segment.
- ✓Foam padded back adds comfort the minimalist packs omit.
- ✓Hipbelt pockets included.
- ✗Heavier than the Bonfus Framus while carrying 8 L less.
- ✗Spring steel frames can deform permanently if badly overloaded.
- ✗No adjustable torso.
- ✗Not waterproof, unlike the Ultra-fabric packs at this price.
- ✗REI's ultralight design heritage is shorter than the cottage brands'.
- ✗Fewer configuration options than a made-to-order pack.
- ✗A BV500 fits only horizontally at the top of the main compartment, so canister trips are tight.
Durston Wapta 30
- ✓ALUULA Graflyte V-98 is a bonded UHMWPE laminate, so the body is waterproof and highly tear-resistant without the weight penalty of a woven Ultra fabric.
- ✓18.3 oz with a full hipbelt and two large hipbelt pockets; strip the belt and it drops to 13.6 oz.
- ✓Three torso sizes from 15 to 21.5 in and two hipbelt ranges, which is proper sizing for a pack this small.
- ✓Around 16 L of external pocketing on top of the 30 L body gives about 46 L total when everything is stuffed.
- ✓Durston publishes both a load ceiling (under 25 lb) and a base-weight target (10 lb), so the intended use is unambiguous.
- ✓A $249 no-hipbelt variant is offered for people who run it as a pure vest pack.
- ✗$299 is a lot for a 30 L frameless pack; woven-fabric fastpacks of this volume typically run $180-240.
- ✗No frame or back pad at all, so the carry depends on packing a sleeping pad or soft items against the back.
- ✗The Wapta page states no warranty period (the Kakwa pages say one year against defects), though Durston promises free repairs for wear and damage.
- ✗No hydration sleeve is mentioned.
- ✗The airmesh strips are not a ventilated back panel; expect a sweaty back as with any contact pack.
REI Co-op Flash Air 50 vs Durston Wapta 30: common questions
Is the Wapta 30 big enough to replace the Flash Air 50?▾
Only for a compact kit. Its body holds 30 L in the medium with about 16 L more in external pockets, and Durston designs it around a sub-10 lb base weight. The Flash Air 50 has a frame and more room for bulkier gear.
Which one is waterproof?▾
The Wapta 30, whose ALUULA Graflyte laminate body is waterproof. The Flash Air 50's UHMWPE ripstop is woven and will wet through, so run a pack liner.
How heavy a load can each carry comfortably?▾
REI rates the Flash Air 50 to 20 lbs, with a spring steel frame doing the work. Durston puts the Wapta 30's comfortable ceiling below 25 lbs, carried without any frame, so on paper the frameless pack goes slightly higher.