Stonehenge Oil Artist Panels' 320gsm paper is made from 100% cotton fiber, and is pre-treated and ready to go as is, saving the artist time and money prepping the surface. To make these panels, this paper is laminated onto a 1/8" thick aluminum panel, providing portability and stability. The Stonehenge Oil Artist Panel is completely archival, acid-free and will not bend in any way. This format will gives any oil artist an opportunity to elevate and enhance their creative work. It offers a fresh, clean and contemporary look that is ready to frame. Stonehenge Oil Artist Panels were designed for oils, but can be used for watercolor, gouache, acrylics and all drawing techniques.