Just to let everyone know when sending squishes (especially to me) if it gets caught in a machine along the way, more postage is needed. I find that if you fold the material the fit the envelope you have a better chance of it arriving fine. The machines around me must love to eat the envelopes-I have had to pay postage due on a few envelopes that have "tread" marks on them-the envelopes were taller than the 1/4" permitted by the 45 or 65 stamp. The clerk at my post office told me that the 45 stamp was for paper correspondence, nothing else-and they are pretty strict. I found a larger envelope, business sizes (for the F8ths) or 4 X 6 (for the finished blocks-those seams can get thick!)work well and I've been able to send them off for regular postage. Flatter is better