I've a lined version from another Norwegian company,
A friend from Norway gave it to me, They can be very useful from a trap
to a sleeping bag .
The lining is very thin and the whole thing rolls op small.
Jerven has more of a range so you should be able to find the right one.
Also you could try making one. A unlined one
here is a link to DYO Fabrics You would need 3 long (depends on the finished size) ykk 5# coil zips that open at one end
like on a jacket and double sided zip heads ,for arm holes you need a metre of the same zip
non opening with 2 double sided zip heads
Fabric , light waterproof around 4-6 liner metres if the fabric is 1.5 wide there will be wastage , nylon or polyester tread size 60# and seam sealer
http://www.profabrics.co.uk/Got carried away a bit here
Smamitman
Smamit Packs
