The Rjays Strap On Weekender Tankbag features:

Main luggage area with enough space for an overnight stay
2 zippered side pockets, 1 zippered map pocket
Velcro strap for use on motorcycles with plastic tank shrouds
Bag can be removed from strap on base leaving a large map pocket attached to the motorcycle
Reflective piping
Carry handle & removable shoulder strap
Rain cover
Single point quick release steering head safety strap
Non slip rubber base

? 34cm long x 30cm wide x 17cm high