Handy TWIN PACK: Get two 5.5 x 8.25 inch sketchbooks at a great price. PREMIUM: 160 pages of smooth, cream-colored paper accents your colors. VERSATILE: dense 81 pound paper takes application of pencil, ink, pen, pastel, charcoal. May take a light water-color wash.S FLEXIBLE: all weather cover protects your art and provides support in the field. SOLID: stitched thread bound books will hold up to rigors of outdoor activities. Great gift for that creative person in your life. DOUBLE THE FUN! Mother Leda gave birth to twins Castor and Pollux, who became shining stars in the heavens. Only natural to get her medium books in a pair!