The Handlebar Bag will hold the items that don't fit your jersey’s back pockets. The bag attaches to the handlebars with two straps and iff necessary a third strap around the headtube. The bottom and sides of the bag are reinforced so it will maintain it’s shape regardless of how much is in the bag!
The bag is made with a Cordura outer fabric, orange lining fabric, a YKK water resistant zipper and bombproof thread.
Outer dimensions of the bag are 25 x 11 x 11cm which means it has space for 3 liters worth of stuff.
Even though both fabrics are waterproof and the zipper highly water resistant; the seams are not. It’ll probably keep things dry in a light shower or damp weather, but in continuous rain or wet roads/trails moisture eventually will find it’s way into the bag. Using some dry bags or zip-lock bags will solve that problem quickly.