Wintu's Feature Panel messenger bag using vinyl, beautiful fabrics with a PVC protective cover was the first product I designed and made over 12 years ago. I love the size and versatility of this bag and will never stop making it, there are so many beautiful fabrics out there to include in this great design. 
All you need to do now is select you fabric. 

Measurements; 30cm high x 30cm wide, with a gusset width of 7cm.
38mm Black seatbelt webbing adjustable strap, extends to 150cm.Zip top closure for your security.
1 x internal open pocket
1 x internal zip closure pocket
1 x internal snap hook for your keys