Seatpost bags?

I have seen a bag that clips onto the seatpost of a bike and sticks out over the rear wheel, almost like a mudguard, but had plenty of space for equipment. I thought they would be really useful for long off road rides.
They look like this: http://www.dotbike.com/ProductsP2080.aspx?Track=FGL - but at £44 it is a bit pricey for a bag...
Has anyone had experience with these whilst mountain biking and which ones are the ones to get?
thanks.
They look like this: http://www.dotbike.com/ProductsP2080.aspx?Track=FGL - but at £44 it is a bit pricey for a bag...
Has anyone had experience with these whilst mountain biking and which ones are the ones to get?
thanks.
Hardtails aren't called hardcore for no reason
Giant STP: http://www.pinkbike.com/photo/1996804/
Spesh Hardrock: http://www.pinkbike.com/photo/1996822/
Giant STP: http://www.pinkbike.com/photo/1996804/
Spesh Hardrock: http://www.pinkbike.com/photo/1996822/
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have noticed that a lot fo the 'keener' riders about use them for essentials instead of lugging alot of kit in a back pack!
After all, I am Cornish!
http://cornwallmtb.kk5.org/
Cotic Soul, The bike of Legends!
http://www.bikeradar.com/forums/viewtop ... 1#16297481
Don't know how big they do, but I believe Top Peak do a decent range of seatpost bags.
http://www.visiontrack.com
I used to take one MTBing until it split whilst DJing in the woods. Haven't got around to replacing it yet. They're great for short blasts, topeak do make good ones, and you can fit a tube, multi-tools, patches, levers, keys etc into them. Pump can fit on the frame etc. However, if you're taking a smallish camelbac anyway, like a chaos, then you just dump all your stuff in that along with your water. So I rarely miss mine because I nearly always have a bag.
Carbon 456
456 lefty
Pompino
White Inbred
topeak range @ merlin... tempted myself