Osprey Exos 38 Litre Rucksack

38 Litres / Internal Frame / Suspended Mesh Back System
Weighs 1136g (Medium size)
Code: SS18041
  • £134.99
  • (FREE Delivery on orders over £15)
  • RRP £149.99
+ In Stock Now | Usually dispatched within 24 hours

Osprey's Exos packs are designed to be lightweight backpacking rucksacks. This modern classic has recently had a revamp but still offers a huge feature-set with a moderate weight profile. The Exos packs have a highly effective venting back system and are extremely comfortable.

Osprey says:

Exos 38 represent the latest in a significant heritage of ventilated and lightweight backpacking packs. Combining optimum comfort and stability with durable, superlight materials, Exos 38 is the ideal pack for moving fast on multi-day adventures.

The Exos 38 offers all the benefits of a lightweight pack but without the normal compromises, helping you to move fast and light. Our revolutionary ExoForm™ harness and hipbelt uses a dual mesh construction to deliver a comfortable and stable fit that puts a traditional harness design to shame. The ventilated AirSpeed™ backpanel will keep you cool when the weather turns hot, but still delivers a stable load-carrying platform.

If you want to really hit minimal weight, remove the lid to expose the integrated FlapJacket™, which provides additional protection to the top of the pack. Keeping your contents tight and under control is even easier with the adjustable multi-point compression system on each pack sides.

Every element of the Exos 38 has been laboured over to keep weight low, yet retain the best performance possible. All these features and benefits at only a shade over 1 kg… We should be accused of witchcraft.

Osprey's 2018 Exos 38 retains many of the features that made it such a great pack in the first place. It still offers a fully ventilated back panel, the type where the pack sits off the back allowing air to circulate thus reducing sweat build up with an improved mesh that is more open and provides more spring for comfort. The frame itself is much thinner but as yet has not proved to be any less durable or strong.

The hipbelt has been improved to give a more encompassing fit and hug your hips to create a closer fit. It is padded but not overly so however, this version sees the zipped pockets on each side of the hipbelt and two further tiny pockets on the shoulder straps removed which is a shame as they were handy features.

The top loader straps work effectively as they pull directly on the frame. On the outside of the pack there are three large mesh pockets which have been updated with material that should prove to be much more durable and these are pretty essential on a backpacking rucksack. The side pockets have dual access which limits their usefulness but makes them easy to access whilst on the move.

The removable lid, which gives you the option of a lighter pack or a couple of extra organiser pockets, has been improved as there are not solid and effective clips keeping it in place instead of the fiddly attachment system of the previous model. If you do decide to leave the lid at home there's a secondary flap that comes into use to protect the contents from rain.

Overall, the new and improved Exos is still a winner.

- Reviewed by Ultralight Outdoor Gear

Help and advice:  Choosing a rucksack at Ultralight Outdoor Gear
Read reviews here:
  • 15mm side compression straps
  • 7mm side compression straps
  • Compatible with Hydraulics™ and Hydraulics™ LT Reservoir
  • Cord tie off points
  • ExoForm™ mesh hipbelt and harness
  • Internal hydration sleeve
  • Light weight peripheral frame
  • Removable sleeping pad straps
  • Removable top pocket with mesh pocket and key clip
  • Single ice axe loop
  • Sternum strap with emergency whistle
  • Stow-on-the-Go™ trekking pole attachment
  • Stretch front pocket
  • Stretch mesh side pockets with InsideOut™ compression
  • Top lid access
  • Maximum Dimensions (cm): 79 (l) x 40 (w) x 30 (d)
  • Minimum Dimensions cm): 60 x 40 x 10
  • Main Fabric: 100D High Tenacity Nylon


  • Weight: 1096 (without lid), 978g (with the lid)
  • Torso length: 40-48cm
  • Volume: 35L


  • Weight: 1136g (without lid), 1014g (with the lid)
  • Torso length: 46-54cm
  • Volume: 38L


  • Weight: g (without lid), g (with the lid)
  • Torso length: 54-80cm
  • Volume: 41L
Showing our 1 review for Osprey Exos 38 Litre Rucksack. Write a review ›
Review Summary - 5 out of 5 based on 1 rating.
October 9, 2019 | Joaquin Sanjurjo
Ligera y excelente mochila de trekking

Esta mochila es estupenda. A mi mujer le convenció tanto que no usa otra para caminatas de largo recorrido. Tiene mucho espacio y organizando bien el equipaje es el sustituto ideal como maleta de cabina. Se acabo eso de viaja y facturar!!, sus medidas son ideales. A pesar de lo ligera que es y los materiales tan finos que presenta, es muy resistente. Ha viajado con nosotros en la Transpirenaica (GR-11) y al Himalaya en los Annapurnas y sigue dando guerra. No obstante, es para viajes tipo ligeros, si cargáis mucho la mochila, se nota que no es tan cómoda como otras que llevan mas refuerzo en los tirantes y en la espalda. Recomiendo entre 10 y 8 kilos. Con mas peso, la Exos se clava mucho en los hombros.
This backpack is great. My wife was so convinced that she doesn't use any other for long-distance walks now. It has a lot of space for organizing luggage and is the ideal substitute for a cabin suitcase. For travelling its measurements are ideal. Despite how light it is and the fine materials it uses, it is very durable. It has traveled with us on the Trans-Pyrenees (GR-11) and the Annapurnas in the Himalayas and it continues to wear well. However, it is for light trips, if you carry a lot of weight in the pack you can tell that it is not as comfortable as others that have more reinforcement on the straps and on the back. I recommend between 8-10 kilos. With more weight, the Exos digs into the shoulders.

Ultralight Outdoor Gear Limited