Our London is made from 100% Australian wool felt. It features a genuine leather trim with double knots and a sewn, turned, stiff brim and an amazing fit. Brim Width: 3.25" Crown Height: 4.25" Size: O/S (57cm) with a Velcro size adjuster tucked inside the inner sweatband for a customizable fit. 100% Australian wool felt Trim: 100% genuine leather How to clean: Spot clean using a damp cloth and mild soap. Air dry in an area free from direct sunlight. From brim to crown: 4.5" Brim is 8" Condition: New without tags