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Tensor 20L Backpack

4.25 out of 5 stars
4 Reviews


Size Chart


Why We Like The Rab Tensor 20L Backpack

The Tensor 20L Backpack is our handy companion for day hikes or bike rides, featuring Rab's AirContour system with a pre-curved back panel for a close-to-body fit that allows natural movement. A hydration-compatible design houses our reservoir for on-the-go refreshment, while multiple drop-in and zippered pockets keep small essentials and valuables organized.


  • Versatile and durable daypack for outdoor activities
  • 420D ripstop material is sturdy and water-resistant
  • Padded mesh shoulder straps are breathable and comfy
  • Sternum strap and adjustable waist belt let you adjust the fit
  • Side compression straps help secure pack load for a stable carry
  • Made sustainably with 100% recycled polyester material
  • TipGripper attachments can secure trekking poles if needed
  • Item #RABZ0IP
Responsible Collection
100% recycled 420D polyester ripstop, HydroShield DWR treatment
20l (1220cu in)
Air Contour
Shoulder Straps
padded mesh, sternum strap
Waist Belt
Hydration Compatible
yes, up to 3L reservoir
Reservoir Included
[external] 1 zippered top, 1 front stretch mesh, 2 side stretch mesh [internal[ 1 zippered security
Gear Loops
bike light loop
Trekking Pole Carry
TipGripper attachments
side straps
19 x 11.8 x 9in
Claimed Weight
1lb 5oz (595g)
hiking, biking, casual
Manufacturer Warranty
limited lifetime

Overall Rating

4.5 based on 4 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 3 reviews

What do you think about this product?


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2 out of 5 stars

December 23, 2023

Suitable size but frayed after

Suitable size but frayed after a week of gentle walking. I have very little faith that this pack would stand up to robust use or last a year.

user image
Jazz B.

Originally reviewed on Rab

5 out of 5 stars

August 28, 2023

Very comfortable pack, and the

Very comfortable pack, and the straps are very breathable

Chloe L.

Originally reviewed on Rab

5 out of 5 stars

May 15, 2023

A very comfortable day sac

A very comfortable day sac for those who want to travel light. For the first time I was unaware of anything on my back. Well made and a good fit. Impressed!

Paul W.

Originally reviewed on Rab

5 out of 5 stars

April 16, 2022

Perfect for hiking, hardly noticed

Perfect for hiking, hardly noticed it on my back. The orange really stands out as well.

Joshua M.

Originally reviewed on Rab