They are cotton and polyester used in canvas. These two fabrics are often blended to create the best canvas. The best canvas blends have more cotton than polyester.

This printable art canvas is a 100% cotton material, the print can show the effect of oil painting. 

Printable cotton canvas is a kind of digital printing Cotton Art canvas fabric. Used in galleries, indoor decorations, wedding photography, posters, exhibition board, emulation paintings, etc Designed for indoor advertising especially.