Jim at £4 it is a snip. I certainly highly recommend that folk protect their handheld satnavs, placing them in a case of some sort, from abrasion and this little bag has the advantage of protecting them from knocks and bumps.
Again, Garmin confound me, they put such an obvious amount of time, effort and no doubt money into developing excellent handheld satnavs yet they fail completely in providing descent ancillary items, a good protective case being one such item, even screen covers. This week I was asked by a group if I could help them set up their Montana 650t satnavs, as they felt the accompanying instructions were quote 'Rubbish!'