The Art Board Reflex Sketch Pad 90gsm 25 Sheets A3 provides an expansive medium-format canvas tailored for complex drafts, architectural layouts, and anatomical studies. This premium acid-free paper holds dry media effortlessly, preventing pastels and graphite highlights from smudging prematurely. Supported by a durable rigid backboard, it serves as a reliable work surface for artists drafting on studio easels or desktop configurations.