Bikepacking Gear Review: Osprey Mira 32 & Osprey Manta 34 Packs

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Finding the right gear-carrying setup for a bikepacking trip can be a challenge. Do you go with a frame bag, handlebar roll, and a seat post bag or do you carry everything on your back in a large backpack? While there’s no one right answer to this question – and honestly every bikepacking trip requires a different gear setup – I recently tested out the Osprey Mira 32 pack on my Telluride to Moab Hut-to-Hut trip and I thought it worked great. My boyfriend tested out the men’s version – the Osprey Manta 34 – and also loved it for this type of adventure.

These packs were designed for overnight backcountry hut-to-hut trips, which was one of the biggest appeals to us. I wouldn’t recommend them for every bikepacking adventure, but if you don’t need to carry a ton of gear and you want to keep your mountain bike light and agile, a backpack setup could be a great choice.

Read my review on the Osprey Mira 32 and Osprey Manta 34, which were designed for bikepacking hut-to-hut adventures.

The Packs At A glance

Osprey Mira 32 Women’s Pack

  • Capacity: 32 liters
  • Weight: 2 lbs. 15.5 oz.
  • Dimensions: 21 x 14 x 13 inches
  • Fits torso length: 14-19 inches
  • Fits waist circumference: 25-50 inches
  • Included hydration reservoir: 2.5 liters
  • Price: $180.00
Osprey Mira // Looking for the best bikepacking backpack? Read my review on the Osprey Mira 32 and Osprey Manta 34 packs for hut-to-hut adventures.

Check price: Osprey / Backcountry / REI

Osprey Manta 34 Men’s Pack

  • Capacity: 34 liters
  • Weight: 3 lbs. 1.4 oz.
  • Dimensions: 22 x 14 x 14 inches
  • Fits torso length: 17-22 inches
  • Fits waist circumference: 25-50 inches
  • Included hydration reservoir: 2.5 liters
  • Price: $180.00
Osprey Manta // Looking for the best bikepacking backpack? Read my review on the Osprey Mira 32 and Osprey Manta 34 packs for hut-to-hut adventures.

Check price: Osprey / REI


Key Features Of The Osprey Mira 32 & Osprey Manta 34

Looking for the best bikepacking backpack? Read my review on the Osprey Mira 32 and Osprey Manta 34 packs for hut-to-hut adventures.

1. Multiple adjustment straps

To get the best fit, the Mira and Manta have multiple adjustment straps on the shoulders, back, sternum, and waist. It took me a few minutes of adjusting all the straps to get a good fit, but with a little patience and testing these packs should feel comfortable for every body size and type!

2. Variety of interior & exterior pockets

Another favorite feature of these packs is the variety of pockets on the inside and outside. There are 7 exterior pockets including two side mesh pockets for water bottles (or flip-flops on my hut-to-hut trip), one large cavity compartment, and several smaller pockets for miscellaneous organization.

3. 3D-tensioned open mesh AirSpeed back panel

One of the biggest key features of these packs that I love is the open mesh back panel. If you’re in the saddle all day, you’ll want a pack that allows for optimal airflow across your back and the Mira and Manta deliver. The mesh panel is designed to keep the pack a few inches away from your body so you don’t have to suffer through a sweaty, itchy ride. Another bonus to this feature is that most of the pack weight is also kept off your back.

4. Exterior compression straps

The Mira and Manta are designed with upper and lower compression straps to keep the packs tight and compact on your back. This is particularly helpful when bouncing down rough singletrack sections.

5. Integrated rain cover

When the skies open up and start dumping rain down on your adventure, the Mira and Manta have an integrated waterproof rain cover to keep your pack and gear nice and dry. The rain cover tucks into a small pocket at the bottom of the pack and can easily be accessed or stashed depending on the weather.

6. Dedicated hydration pocket with included reservoir

The Osprey Mira 32 and Osprey Manta 34 were designed with a designated hydration pocket and they each come with a 2.5-liter hydration reservoir. If you need to carry more water, you could easily swap it out for a 3-liter reservoir.

I was a little worried that the extra water weight would make the pack sit heavy on my shoulders, but I really didn’t notice the extra pounds at all. The packs are designed to distribute weight well and they sit comfortably on the shoulders and waist.

The only thing I don’t love about the hydration system is the way the hose exits the top of the pack. It’s a little awkward and the hose got kinked on me several times during my hut-to-hut trip, stopping the water flow. But with a bit of adjustment, this is easily fixed.

Looking for the best bikepacking backpack? Read my review on the Osprey Mira 32 and Osprey Manta 34 packs for hut-to-hut adventures.

Osprey Mira & Manta Pros & Cons

Pros:

  • Excellent ventilation across the back. I literally didn’t feel any sweaty shirt clingingness to my back!
  • Easy torso adjustment to dial in the hip belt to shoulder strap spread (i.e. it’s super easy to fit to any body type/size)
  • Plenty of pockets for organization
  • Included 2.5 hydration reservoir. You could carry an even larger water reservoir if you needed to
  • Osprey’s All Mighty Guarantee pack repair. Osprey will repair any damage or defect for any reason free of charge
  • The integrated rain cover is a huge plus

Cons:

  • Most of your weight is on your back. Honestly, I didn’t feel like this was a big issue since our packs were pretty light, but if you’re packing heavier gear you might find it less comfortable or less ideal to have your gear on your back rather than your bike frame
  • No bike tool roll like the Osprey Raven or Raptor
  • The hydration hose can get easily kinked
Looking for the best bikepacking backpack? Read my review on the Osprey Mira 32 and Osprey Manta 34 packs for hut-to-hut adventures.

Is the Mira or Manta Right For your Bikepacking trip?

I really liked having the Mira on my Telluride to Moab Hut-to-Hut trip. We didn’t need to pack a lot of gear – basically just clothes, a sleeping bag, and toiletries – so the pack was never super heavy and it allowed for more fun on the technical singletrack sections.

I’d say if you’re packing light and want to want to keep your bike agile and nimble, the Osprey Mira 32 or Osprey Manta 34 could be a great fit. Or, if your bike is an odd fit for bikepacking bags due to its suspension design or frame shape, a backpack might be your only option. If you’re looking for a smaller pack, the Osprey Mira and Manta also come in 22 liters and 24 liters respectively.

On the flip side, if you have a lot of gear and are sticking mainly to roads or doubletrack, loading your bike with bikepacking bags (like a frame bag, handlebar roll, and seat post bag) is probably the better way to go.


Which do you prefer – carrying your bikepacking gear on your back or on your bike frame? Have you tested out the Osprey Mira 32 or Osprey Manta 34? What are your thoughts? Leave a comment below!

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