Flat wood card with corresponding color envelope. Made in the USA from sustainably-harvested birch wood. Blank back. Write with ease using colour pencils, ballpoint or gel pen! 100% biodegradable and recyclable with paper goods. Packaged in a clear sleeve. A2 specialty shape - approx. 4 1/4" x 5 1/2" Unlike paper cards, no two wood cards are exactly alike. Variations in the wood grain make every card truly unique!