I found a site called www.evertize.com

They have several different clear and mesh styles and the prices don't look too bad. They sell in bulk too.

Our school requires clear or mesh backpacks for our students. We were wanting to order some and offer them to our parents. They can be hard to find. Does anyone have any ideas of companies who offer them at a reasonable price?? I've been searching the internet, but would love any feedback. Thanks in advance!