STP

Does anyone have any experience with this particular bag? I am looking for a bag that won't really move around during my rides. I also don't like the seatpost velcro closure that my old Jandd pack has.

I was about to jump on this Topeak bag but have read some accounts where the plastic bracket that holds the bag to the seat rails (which is why I was interested in it) has broken after only a short use. So, I though I'd ask you heathens (oops, not the mtb forum), fine ladies and gentlemen, whether you've had any experience with it and if yours broke, too.

pallen

I have this bag on two of my bikes and on my wife's and have had no problems. It was especially handy when I used to keep my credit card/cash, phone and keys in there. If I stopped at a cafe, bar or coffee shop, I could just pop the whole bag off and take it in with me.

datlas 

I can't comment on this bag but I was seeking a good bag that did not use a stupid velcro strap around the saddle (which causes premature short/bib wear) and ended up with the Lezyne Micro Caddy which is perfect for me. Just enough room for a spare tube, patch kit, co2 and tire levers. It does not rub and only uses the saddle rails for support.

Another good option is the Fizik integrated saddle/bag but I don't have a Fizik saddle.

STP

Ooo, I hadn't seen the Fizik stuff. I wonder if it's time for a saddle change? Hmmm.