This hat was hand knitted by me with Malabrigo Rasta yarn, super bulky weight. 100% Merino wool. Color is called Lotus #120 Size ranges from Small to Medium.to Large. The mannequin head circumference is 22 and 1/2 inches. My head is 20 and 1/2 inches and it also fits perfect. The Pom Pom is sewn in with elastic strap around a button. It is detachable for washing. You can also interchange any Pom Pom for this one as long as it has the elastic loop to go around the button!! I can custom make this hat in any Malabrigo Rasta color and size you would like. Care instructions: Remove Pom Pom Hand wash in cold water. Lay flat to dry.