VERTAST Bicycle Waterproof Saddle Bag Bike Water Bottle Holder MTB CTB Under Seat Bike Bag

I find overly large pannier bags a real nuisance, especially on my folding bike, so I usually fit a modest ‘Rosswheel’ 8ltr bag which meets most needs (I have reviewed that one elsewhere). However, if I want to carry a large water bottle this small saddle bag, which is a companion to the pannier one in construction and design, proves to be ideal.The straps that attach to the saddle frame are then secured to the side of the bag, so no fumbling under the saddle itself is required and It can be quickly fitted or removed. - useful, since I only attach it when I need it. Moreover, on the ‘folder’ I can attach this one without having to remove the pannier bag. The elastic pouch will accept the largest cycle water bottles, but the bag itself is awkward to access when it is strapped on the bike and, anyway, if you open it the contents will of course fall out!However, for my requirments this bag is fine: it also looks well and is water resistant, so for a tenner it proves to be a good investment. Note, though, that If you secure your saddle in a low position there may not be space for it, so check out the dimensions before buying.

Great little saddle bag. I have a d-lock and chain for locking the bike up, and the chain fits in the bag nicely. It also comes fitted with a battery powered light on the rear of the bag to improve your visibility. (I moved my rear reflector to the right strut of my rear wheel.)

to big for my bike.not used ... seems well made tho