The Rhinowalk T603 is a compact ultralight bike saddle bag for riders who only need the essentials under the seat. Its streamlined 15 x 8 x 9 cm shape is built for small tools, keys, patches, or compact daily ride items. Compact saddle-mounted storage for everyday cycling essentials. Lightweight design, with product detail images showing 54.8 g. Reflective strip and tail-light hanging position for night visibility. Check saddle rail clearance and secure attachment before riding.