Made of high quality Oxford cloth, waterproof canvas material, fine workmanship, heavy duty, sturdy and durable. The large main pocket size is 36x50cm/14x19.7 inches, can store 8K painting board, sketchbook; front medium pocket size is 28x28cm/11x11 inches, can contain palette, folding easel, sketch paper, folding buckets; front small pocket size is 28x12.5cm/11x4.9 inches, can hold pencils, paint brushes. The strap is adjustable by adjust buckle, widen strap, comfortable handles, you can either tote it with handle as handbag, or carry it with backpack straps as a backpack, effortless, wear resistant, can also be put into luggage for easy carrying. Great and convenient to store your art works and art supplies, ideal gift for artists, students, hobbyist, teachers outdoor sketch, studio, learning exercises, professional exam and so more. High quality zipper, selection of accessories, metal material, smooth and durable. Intensive stitches, whether it is a shoulder strap, hand strap, zipper, or other place, it is not easy to be off-line.