DELTA SERIES SOFTCOVER SKETCHBOOKS Stillman & Birn Delta Series Softcover Sketchbooks, 270 gsm ( Extra Heavyweight), ivory paper, cold press surface. Suitable for dry and wet media, watercolor and ink. Example of recommended usage: working in heavier washes or overlaying washes (glazing) of watercolor or gouache. Softcover bindings are flexible and lightweight and open totally flat. Acid-free, chloride-free, lignin-free.

• EXTRA HEAVYWEIGHT PAPER: Stands up to advanced dry & wet media techniques. Great for working in heavier washes or overlaying washes (glazing) of watercolor or gouache.
• CRAFTED FOR MIXED MEDIA: Double-sized (from non-animal materials) for enhanced wet strength and glowing color.
• ERASABLE & TOUGH: Accepts multiple erasures of dry media and lifting of wet media.
• DURABLE: Premium U.S. sewn binding, deluxe covers and heavy-duty art paper equals a sketchbook that is built for serious use.
• PREMIUM QUALITY: Exceptional features make Stillman & Birn the popular sketchbook choice, cherished by artists of all levels.