Arpenaz 20 Ultra-Compact Waterproof Backpack - Blue

Réf :
Key feature
An ultra-compact, waterproof extra backpack, which folds up into a small ball and can be stored in the pocket of another backpack.
Users reviews
5 / 5 1 rating

2 colors

Users reviews

5 / 5 1 rating
1 users recommended this product
  • Man
    +60 years old
    30 May 2016
    Use since 2 to 8 weeks
    That review has been deposited on this product version
    purchase confirmed
    Vàlue for moñey
    Compact, waterproof, comfortable. Would benefit with an external drinks pocket

    I bought this rucksack for its compact size which is genuinely pocketable and so can be taken anywhere. The material is thin and lightweight but appears quite tough. To test its claim to be waterproof I filled the sack with crumpled paper and rolled and clipped the top as recommended, I then gave it a good dousing from a hosepipe. I was surprised to see the water just roll of and after a good shake opened it up to discover the contents to be dry though care should be taken when unrolling the top as water can gather here. So yes it is waterproof provided the roll top is fastened correctly but due to its light weight I doubt whether it would remain so if submerged though I have not tested this. Overall I am very impressed with this sack which is comfortable to wear due to the close spacing of the shoulder straps (unlike some rival products which are also much more expensive) I can't comment on durability as I have not had the sack long but as an occasional sack I feel sure that it will meet all expectations. For the price this offers excellent value. Well done Quechua.

User benefits

20 L and 97 g
Multiple compartments
1 pocket
Compact design
folds up into a very compact, small ball
Environmental impact
Life cycle comparison: Backpack -

Technical card

Main fabric : 100.0% Polyester (PES)
Designed to
hikers looking for an extra backpack for a short tour around their refuge or bivouac
2 years


Storage Tips
store your bag in a dry place.


Backpack technical tests
Backpack components are approved in laboratory tests, including:fabrics, buckles, straps, foams, zips... For example, for a fabric: resistance to wear, tearing, colour-fastness in UV rays, washing, waterproofing, etc. Then, a test is done on the finished product that acceleratedly simulates the kind of treatment it will be subjected to over the years, to assess assembly strength. The backpack is weighed, then placed on a dummy which simulates the movement of fast walking through 1000 of cycles.
How is backpack volume measured?
The volume of each backpack is measured using a standardised method: we fill the main compartment as well as each pocket with little balls. Then, we empty these balls into a graduated container, which gives the equivalent volume in litres.
A note to compare the environmental impact of the products
The environmental impacts of the product are calculated throughout its lifecycle and with different indicators. An ABCDE global grade is performed to help you easily identify the products with the best environmental performance by comparing the products of the same type among them (T-shirts, trousers, backpacks...). Decathlon is a voluntary player of this environmental labelling approach. For more info: