HIGH QUALITY - A3 landscape sketchbook is made of thickened paper, and the cover is bound with kraft paper. The surface is very hard, which can protect your inner pages from water. PAPER - The sketch paper is 160gsm with smooth surface and fine texture. The cover is kraft color, which is particularly hard. You can write and paint at any time and anywhere without having to find anything to cushion it. Spiral bound sketchbook is very convenient. The spiral binding is simple and elegant. PRACTICABILITY - When you writing, the paper can effectively absorb color, but it is not easy to penetrate to another page, so you don't have to worry about the page being damaged. You can also practice in the sketch learning stage. The A3 spiral sketch book is 30 sheets and 60 pages, which is enough for your daily use. WIDE RANGE OF USES - The size of A3 spiral sketch book is 42x29.7cm, especially suitable for outdoor sketch, and it is also very convenient to carry when traveling. Spiral up sketchbook is applicable to sketching, painting, writing, etc.