The soft 350 weighs in at just 76 grams and has 350cc 035 litres of storage space making it ideal for shorter rides or commuting it attaches via a simple clip onoff bracket and has the added benefit of a reflective strip for additional safety roller 21 fitting system the roller 201 fitting system allows you to easy fit your saddle bag to any size seat rails without the need for tools once the clamp is fitted the seat bag can fastened and removed with a simple twist motion