This hand dyed, self striping yarn is dyed in small batches exclusively for Simply Socks Yarn Company. The name pays homage to our restored 1940's post office store and dye studio and we hope to bring a bit of that era to you with each skein- when each card or piece of mail held promise and carried importance often looked over in a digital age. Size is approximately 393 yards, 100g. 75% superwash corriedale wool, 25% nylon. See product page for more details. Fingering weight.