More on Amazon.com : http://www.amazon.com/gp/product/B003JITID0?tag=thefatkidin06-20

Studiohut 20x20 Square Easy Fold Photography/Video Speedlight Flash Softbox with L-Bracket

20x20 size
Portable and lightweight Compact and stores easily
Mounts to most light stands
Great for setting up speedlites in a studio environment
Easy assembly