Made from eco-friendly, yellow birch wood, these happy thank you notes are wooden, but certainly not stiff. Flowers adorn the letters in in.Thank You,in. which is printed in multiple colors. Write on the back with ease using colored pencils, ballpoint or gel pens. 100% biodegradable and recyclable with paper goods. Set of 6 flat cards comes with orange envelopes. 4.25 x 5.5.in.