Ortlieb Saddle-Bag 1,6L black matt

This seat pack with its convenient adapter system offers you an elegant means of stowing an additional amount of critical gear. 

The Saddle-Bag is a redesigned ORTLIEB classic, a seat pack that is so practical that it belongs on every bike tour! The 1.6-liter version (ideal for road bikes and mountain bikes) of the waterproof Saddle-Bag provides a secure place for a bike-repair kit, a smart phone or other items. Thanks to the pack’s roll closure and side buckles, everything you stow remains snugly packed and easy to access.
The Saddle-Bag attaches directly to your bike seat with an adjustable snap buckle. The intuitive adapter allows you to quickly attach the pack to or detach it from your bike. Moreover, the snap buckle is compatible with all previous Saddle-Bag models so that you could use it on different bikes. A Velcro strap that attaches to your seat stem provides additional stability, effectively preventing any unwanted shifting. Another advantage in the case of the large pack is that it doubles as a rear fender, keeping spray water off your back.