Night Owl Paper Goods Kittymas Wood Holiday Cards (6 Pack) Set of 6 flat wood cards and 6 envelopes, packaged in a clear box Cards made from sustainably-harvested real birch wood veneer Wood veneer is thin enough to not require extra postage, yet flexible and durable enough so that it can be mailed safely (approx. 1/32") Handwrite your sentiment on the back with ease, using a colored pencil, ballpoint pen or gel pen Made in the USA and 100% biodegradable and recyclable with paper goods