MOTHER The Jam Shirt in Boombox Blastin' - Blue. Size XS (also in L, M, S, XL). 65% cotton 35% linen. Made in USA. Machine wash. Front snap button closure. Snap button closure at cuff. Breast flap pockets. MOTH-WS165. 21096-1352. About the designer: Los-Angeles-based denim vets Tim Kaeding and Lela Tillem debuted MOTHER in the fall of 2010. Their collection offers a stellar fit, ultra comfort, and denim made from fabrics that are soft, stretchy, and cashmere-like. Expect your favorite styles reinvented along with the bell bottoms and not-too-skinny skinnies.