Features 100% natural long-staple heavy-duty cotton and Swedish Pinewood Frame this stretched canvas can amplify the pleaseure of creating and bring out your work better. Artkey insist on using natural raw materials acid-free and non-toxic coating materials and hand processing. It makes these paint stretched canvas have higher tinting strength and excellent natural tones and glossiness during painting. Acrylic titanium gesso primed flat canvas board keeps the surface ready to paint sketch illustrate etc. The rigid board is hand stretched and glued over acid-free heavy boards which are smooth firm and flat. Each piece of canvas panel has been strictly inspected to avoid stain wrap or deformation.