- 100% acid-free cotton blank canvases, ideal for acrylic, oil, and mixed media painting - Set includes 4 canvases: 2 of 20x30cm and 2 of 30x40cm, mounted on sturdy pine wood frames - Surface triple-primed with titanium acrylic gesso, preventing cracking and maintaining color brightness - Back-stapled edges for a professional finish and greater stability - Includes 32 wooden tightening keys to adjust canvas tension as needed - Canvas sides can be painted, allowing artworks without the need for additional framing - Suitable for artists, students, and hobbyists, ideal for school projects, workshops, and art studios - Excellent choice as a creative gift for those who enjoy painting and crafts