100 % Cotton, 300 gsm. Made from long-stapled cotton with natural texture, higher tinting strength, and excellent touching sense. The cotton surface of the painting canvas doesn’t shrink and is stable in every dimension. The cotton canvas holds paints well and keeps the paints with their natural tones and glossiness. 17 x 30 mm. Pinewood stretcher bars with mortise & tenon connection ensures the frames are firm and sturdy. Canvases are stretched tightly onto the bars and back stapled to create clean edges. Without deformation, they are tough enough for impasto and acrylic pouring. Triple-primed with 8 ounce gesso, makes the painting surface ready to paint, collage, draw, sketch and illustrate with excellent tinting strength and does not crumble or crack. Suitable for all kinds of painting materials, e.g, oil, acrylic, watercolour, gouache, pastels, and tempera. Works especially great for oil and acrylic colour to keep your paintings bright and glossy. Individually packed.