From the Della Q website: 

della Q's Mesh + Zip collection is a matching set of three nesting zipper pouches. Each bag has fabric on one side, and mesh on the other. The sets include a small and large zip pouch, that are perfect for notion storage, as well as an extra large pouch that's big enough for a small project! The bags can be stored inside one another to save space.

DIMENSIONS:
Small: 7.5" W x 5" H x 2.25" D
Large: 9.5" W x 6" H x 2.75" D
X-Large: 11" W x 8" H x 3.5" D