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Rucksack rain covers

Tips on choosing and care in our guide ↓

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Guide

Rucksack rain covers

A rain cover should surround your packed rucksack and hold securely around its back edge. Add a waterproof liner for sensitive contents, as the harness side remains open.

Key points

Check the size range on your fully packed rucksack.
A mat or jacket strapped outside needs extra space.
Protect important papers and electronics inside a dry bag too.

How is your rucksack packed?

Use	Choose	Bear in mind
Compact daypack	ChooseClose-fitting cover	Bear in mindA neat edge is less likely to catch on branches or billow in the wind.
Full outer pockets	ChooseEnough depth in the cover	Bear in mindInclude bottles and filled side pockets when trying it, rather than judging the empty rucksack shape.
Box-shaped daypack	ChooseMatching shape	Bear in mindAn angular bag needs a different cover shape from a narrow top-loader with the same stated capacity.

What to look for

Question	In brief	Why
Which size?	In briefCapacity and packed shape	WhyUse the approved size range as a guide, but also check depth with any equipment strapped outside.
How does it attach?	In briefCheck rim and retention	WhyThe elastic edge should grip all the way round. Use additional attachments as instructed so the cover stays put in wind.
How should I dry it?	In briefAir it separately	WhyRemove it from the rucksack after rain and dry it separately. Do not leave wet fabric compressed in its small stuff sack.

Common questions

Does this make the entire rucksack waterproof?

Use a sealed liner for especially sensitive items. The cover remains open on the harness side; water from your back and wet straps can still reach the rucksack.

Can I choose only by litres?

Capacity is a starting point. Try the cover with your usual equipment: full side pockets, a sleeping mat or a tall lid compartment can change the packed shape considerably.

Will a universal cover fit a Kånken?

Compare shape and size range. There are covers made for the angular Kånken; a universal cover must grip its corners properly without covering the shoulder straps.

How do I look after the cover?

Remove dirt gently, let it dry fully and treat the coating as directed. Check small areas of damage before your next outing, and do not let sharp equipment press against the fabric unprotected.

Last updated: November 2026

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Key points

How is your rucksack packed?

What to look for

Common questions