http://www.argos.co.uk/webapp/wcs/st...clickfrom=name
That sort of bag is perfect. I use an old satchel/ soft bag that i got given at a conference. Pen holders in the front are a bonus.
Plenty of room for a headset, couple of charts, plog pad, nav kit mobile phone, sandwich, 1ltr of juice, a fuel tester, a pair of pants t-shirt and toothbrush & paste.
tescoapp