Nice present.
We use ours a lot and (so far) have had no issues with water getting in.
Easy to fit using the two longitudinal and one lateral strap. I put bag on rack and then thread straps under the rack and pull each one tight after threading through the buckles.
Straps are more than long enough so I wrap them round the tight straps to stop them flapping around in the wind.
I found it helped to cut a fairly thick piece of card to fit inside the bag to act as a floor, stops bag oozing through rack and makes it easier to lay clothes out in the bag.
