Big Skinny Women's Slimvelope Tri-Fold Checkbook, Holds Up to 40 Cards Ultra-thin checkbook wallet with two billfold/checkbook areas 6 extra-wide card pockets hold up to 40 plastic cards Two ID pockets with a clear plastic windows; external full-size zippered pocket Constructed of thin, light, and durable nylon microfiber; machine washable Measures 7.5 x 4 x 0.27 inches