SKETCH BOOK A4 135GSM SBS 1631( 15'S ) 

Professional-grade A4 sketch book featuring 135GSM SBS paper stock, ideal for artists and designers seeking quality drawing surfaces. This 15-sheet pad delivers smooth, durable pages that handle pencil, charcoal, and mixed media with excellent performance. The substantial paper weight prevents buckling and provides reliable tooth for layering techniques. Perfect for studio work, concept development, or everyday sketching practice.