The Sienna Canvas/Panel Holder is the latest breakthrough in plein air paining. The Canvas/Panel Holder can hold stretched canvas and painting panels from 8" up to 30" tall. Rubber canvas holders will securely hold ¾", 1 ½", and 2" thick canvas. The panel clips will securely hold ¼ "or 1/8" painting panels. Combined with the Sienna Supply/Palette Box, Sienna Tripod, and Ultimate Plein Air Backpack (sold separately), you have a versatile easy to use traveling studio.