Here is a handlebar bag that I have been working on for the last couple of months!The bag includes features such as a Velcro opening to insert an HDPE sheet and dowel to keep the bag's shapes and increase stability. It also has Molle strap attachments on the sides making it compatible with the molle version of the stem bag. Various colours available!
The bag measures 9-18" (H) x 12" (L) x 8" (W). Customer sizes as well.
All bags come with the ncessary velcro, buckles, and straps
 
Visit the materials page for details on colours