An excellent size for a spare inner tube, tyre levers, multi-tool, keys, and mobile phone.Wedge shape waterproof PVC coated material with semi-rigid internal frame.- Secure, fast & easy to fit QR bracket, with 1 velcro stability strap.- Water resistant zip closure.- Large, full access, bottom hinged rear flap.- Internal small item rear flap pocket.- Hi-Viz internal liner to help find your possessions.- Small day-glow red reflective logo patch.- Semi-rigid plastic rear light bracket (for lightweight LED lights clip-on lamps)- Waterproof PVC material.- 197g including QR bracket.- Fits most conventional 7mm rail saddles with inline or short offset seat posts.- All Gloss Black or Satin Black with contrast Gloss seams.