The X4 and X2 barrows have been designed to give you the desired combination of minimal packed size and maximum space once made up. This has been achieved thanks to the extending frame, even though they are more than big enough to carry all your gear they pack down conveniently into their own carry bag.

RETAIL LINK
http://www.benwick-sports.co.uk/accessories/5274-map-x4-extending-barrow.html