This wheel thrown yarn bowl for knitting or crochet is made from porcelaneous stoneware fire to about 2160 degrees. It is about 4" tall X 6" wide. I hand paint the decoration with underglaze oxides and then dunk them in a clear glaze. Since each is made by human touch, they are unique with some variation in shape and design. Experience has taught me to carve the yarn slot all the way around so it is not likely to pop out. The yarn will just roll around in the bowl while you are knitting. I have been a professional potter and clay artist for some 35 years. I love hummingbirds and enjoy painting them. I ship priority 3 day usps. .