Ortlieb Seatpost Bag

Adjustable rachet for mounting to circular seatposts; not for use on carbon seatposts
Can be taken off quickly and singlehandedly
Roll closure with elastics affixes tightly with minimal dimensions
Illuminating 3M Scotchlite reflector adds visibility in low light
Can affix optional rear light (light not included)
When biking without fenders, the seatpost bag helps keep off dirt and water off your backside
Maximum load of 3 lbs. 5 oz. (1.5kg)