Reviews Summary

99% of the Osprey Ace reviews are good or excellent!

Excellent (96%)
Good (3%)
Average (0%)
Poor (0%)
Bad (0%)

Here's what the reviewers think about the Osprey Ace:

Reviewers like these things about the Osprey Ace

  • Users said that It's very sturdy, well made, and comfortable to wear.
  • They also said that It does not bounce or slide while they are running.
  • Reviewers who used the pack said that it fits snuggly and doesn't move around while running.
  • One great feature mentioned by many users is that there are two straps on the bottom that squeeze the reservoir compartment tighter to take any slack out after you drink some of your water stores down.
  • Most reviewers said that there are plenty of pockets for storage of phone, keys, wallet, nutrition, and extra layers.
  • They also mentioned that there's also a very nice cell phone pocket that's easily accessible while running.
  • Users said that the bladder is much easier to fill than others.
  • Several users love that the mouthpiece clips on to the top chest strap with a magnet.

Reviewers don't like these things

  • Some users complained that the pocket that is specially made for a phone will not fit any of the larger phones.
  • Some other users complained that the pack is really small and barely fits around their shoulder.


Crowdsourced specs across all Osprey Ace models and sizes:

Capacity iconCapacity38-75 l (2319-4577 cuin)
Weight iconWeight2.4-3.4 oz (1.1-1.5 kg)
Length iconLength23-26 in (58-66 cm)
Width11-12 in (28-30 cm)
Height12-13 in (30-33 cm)

The bag is recommended for these activities:


Popular Models

Osprey Ace 50

50% choose the Osprey Ace 50

50 %
Colors and combinations:


Capacity iconCapacity50 l (3051 cuin)
Weight iconWeight2.9 oz (1.3 kg)
Length iconLength26 in (66 cm)
Width12 in (30 cm)
Height13 in (33 cm)

Osprey Ace 38

17% choose the Osprey Ace 38

17 %
Colors and combinations:


Capacity iconCapacity38 l (2319 cuin)
Weight iconWeight2.4 oz (1.1 kg)
Length iconLength23 in (58 cm)
Width11 in (28 cm)
Height12 in (30 cm)

Osprey Ace 48

17% choose the Osprey Ace 48

17 %
Colors and combinations:


Osprey Ace 75

17% choose the Osprey Ace 75

17 %
Colors and combinations:


Capacity iconCapacity75 l (4577 cuin)
Weight iconWeight3.4 oz (1.5 kg)

Osprey Ace 38 vs Ace 50

The two most popular Osprey Ace models are the Ace 38 and the Ace 50, so let's compare them:

Popularity and Prices

In total, 67% of the people interested in the Osprey Ace bags choose one of these two models. The most popular choice is the Ace 50 which is choosen by 50% (2.9 times as many as the 17% that choose the Ace 38).

Ace 38Ace 50
Most popular

Looking at the prices, the Ace 38 is typically around $30 cheaper than the Ace 50, but check the deals before you buy.

Ace 38Ace 50

Capacity and Packing

The Ace 38 has a capacity of 38 l, while the Ace 50 has a capacity of 50 l.

Ace 38Ace 50

For a traveller, the 12 L (732 cuin) difference equals around 1 blouse, 1 pants and 1 jacket.

Packing the Ace 38
1 laptop
1 toilet bag
1 blouse
1 pants
4 tshirts
4 boxers
4 pair of socks
1 shorts
1 pair of shoes
1 towel
1 book
Extra in the Ace 50
1 blouse
1 pants
1 jacket

If you are an athlete, the 12 L difference equals 1 tshirt, 1 boxers, 1 pair of socks and 1 football.

Packing the Ace 38
2 water bottles
1 toilet bag
1 blouse
2 tshirts
2 boxers
2 pair of socks
2 shorts
1 jacket
1 pair of shoes
4 protein bars
1 towel
1 book
Extra in the Ace 50
1 tshirt
1 boxers
1 pair of socks
1 football

Outdoor people can equal the capacity difference as 1 pants, 1 tshirt, 1 boxers, 1 pair of socks, 1 towel and 2 packaged meals.

Packing the Ace 38
2 water bottles
1 toilet bag
1 blouse
1 tshirt
1 boxers
1 pair of socks
1 shorts
1 jacket
2 protein bars
1 book
1 sleeping bag
2 packaged meals
Extra in the Ace 50
1 pants
1 tshirt
1 boxers
1 pair of socks
1 towel
2 packaged meals

Check how you can pack the Ace here.

Weight and dimensions

The weight of the Ace 38 is 0.5 kg (17.6 oz) lower than the weight of the Ace 50.

Ace 38Ace 50

If we look at dimensions, the Ace 38 is 3 in (8 cm) longer than the Ace 50 (23 vs. 26 in). It's 1 in (2 cm) wider (11 vs. 12 in), while the height of the Ace 38 is 1 in (2 cm) less than the height of the Ace 50 (12 vs. 13 in).

Features and Colors

Only the Ace 38 is available in red. Only the Ace 50 is available in blue.

Feature Summary

Many sources mention these Osprey Ace features:
  • Compression straps
  • Side pockets
  • Stretch mesh
  • Sleeping bag compartment
  • Sternum strap
  • Hip belt
  • Hip belt pockets
  • Adjustable torso
  • Hydration compatible
  • Raincover included

Actual features depends on the model, so check the features before you buy.

Packing Guide

See how much a traveller, an athlete and an outdoorsy person can pack in the different Osprey Ace models (the most popular choice is the Ace 50).

Capacity/Weight Levels

The capacity/weight level shows how much the bag weights compared with it's capacity (volume).

The lower the capacity/weight level, the better.

3838 l2.4 oz0.06 oz/L
5050 l2.9 oz0.06 oz/L
7575 l3.4 oz0.05 oz/L

Osprey Ace
Average for 19,962+ different bags


vs Osprey Bags

The Osprey Ace ranks #11 compared with the other Osprey bags.

Top 20% Osprey bag

9Osprey Dyna
Osprey Dyna
10Osprey Ace
Osprey Ace
11Osprey Xenith
Osprey Xenith
12Osprey Farpoint
Osprey Farpoint
13Osprey Mutant
Osprey Mutant

vs All Bags

The Osprey Ace ranks #56 compared with all the bags we have checked.

Top 5% bag

54Arcteryx Maka
Arcteryx Maka
55Osprey Ace
Osprey Ace
56Lowepro Ridgeline
Lowepro Ridgeline
57Kipling Bailey
Kipling Bailey
58Gregory Jade
Gregory Jade

Vs Other Bags

Crowdsourced comparison of the Osprey Ace vs the Deuter Fox.

Many sources mention this feature
Some sources mention this feature

Osprey Ace vs Deuter Fox

Osprey Ace
Osprey Ace

Based on 76 reviews
Capacity: 38-75 l
Weight: 2.4-3.4 oz
Price: $$$

Deuter Fox
Deuter Fox

Based on 160 reviews
Capacity: 30-40 l
Weight: 2.6-2.9 oz
Price: $$

  • The Ace is rated a little bit better than the Fox.
  • In total, we have checked and analyzed 236 reviews of the two bags.
  • The biggest Ace is 88% bigger than the biggest Fox (75 L vs 40 L).
  • The weight of the biggest Ace is 17% heavier than the biggest Fox (3.4 oz vs 2.9 oz).

Adjustable torso
Carry-on size
Compression straps
Hip belt
Hip belt pockets
Hydration bladder
Hydration compatible
Ice axe/trekking pole loops
Raincover included
Side pockets
Sleeping bag compartment
Sternum strap
Stretch mesh

Both bags are available in these colors:

Only the Ace is available in these colors:

Only the Fox is available in these colors:

Selected Reviews

The Big Outside

Built with a level of quality that compares with better, entry-level adult packs, the Ace packs tackle the challenge of fitting a wide range of kids’ body sizes comfortably, and giving parents a broad range of pack capacities to choose from for their kids.

Posted 27 April 2016 - Read full review

Become a reviewer

Bag ID 33137. Images from Amazon Product Advertising API

Last update on 2019-02-22 / Affiliate links / Images from Amazon Product Advertising API

Last updated on February 10, 2019