Camping Equipment Question

Bit of a broad subject. My question is much more specific and probably quite silly. Does anyone know where I could get a sleeping bag that rolls up tight enough to fit in a 35 litre rucksack, or can be strapped to one? The reason being that I am taking part in the London to Amsterdam 300 for Scope in September and a sleeping bag is required. I want to be able to cycle home from London on my return and don't want a big sleeping bag stopping me.
Any help / advice will be appreciated.
Thanks.
Any help / advice will be appreciated.
Thanks.
0
Posts
here
http://www.decathlon.co.uk/s10-ultralig ... 06690.html
and they do mail order if you don't have a branch near you.
35 litres is quite a lot. Halfords sell useful velcro straps if you need to compress the bag further.