Rhythm Derby Jacket in Grey. - size XL/1X (also in L, M, S) Rhythm Derby Jacket in Grey. - size XL/1X (also in L, M, S) 100% cotton. Machine wash. Front zip closure with button overlay. Side pockets. Ribbed trim. Midweight twill fabric. RHYT-MO7. 0725M-JK02-SMO. Rhythm brings together a unique group of designers, artists, musicians, surfers and snowboarders with a shared dream of creating a livelihood doing what they love. Drawing on influences frim the worlds of art, and music Rhythm is for those who yearn for new frontiers over the well worn path.