Protection

I've had one of the Ground Effect bags for about 18 months. The 'dropout spacers' are just two hollow acrylic tubes that shatter so not really the selling point they make them out to be. Biggest problem is that it's a small bag so you have to fully take the bike apart to fit it in which has been annoying at various times.

Those things are rubbish - best to get a length of threaded stell from a building supplier and 8 nuts, locked off against each other to the spacing requirements of your frame/fork. Or an old hub axle with cones/nuts still attached.