Part of the Castelli Race bags range the Undersaddle Mini is the perfect bag for sticking on your road bike to carry some summer essentials. Super compact this fit and forget under saddle, seat-pack can be crammed with a couple of (road) inner tubes 18-25mm max a multi-tool, a spare link and a few £10s. In short most of the things you might require on a ride. It fits with a single strap (through the rails no need for a seatpost stabiliser), this strap uses a magic moulded hook and loop fastener that can be trimmed at home and that wont fur your shorts.The Mini bag is also weather resistant as is the zip. (OK its not totally waterproof but its better than most) the zip pull sits in a little cave so it stays silent and doesn't open mid ride. The rear wordmark is reflective and the lining is in a pimp corporate red. Could you ask for more?
Possibly the greatest accolade for the Castelli Undersaddle Mini is you forget its there.
Water and stain resistant materials Water resistant zipper Water resistant construction Adjustable hook and loop attachment strap Internal storage pocket Reflective accents External dimensions 5 x 5 x 13cm (enough room for a Lezyne V-Tool with chain-breaker or similar 2 road bike inner tubes a spare link and some folding cash).