One Teaspoon Rock N Roller Jacket. - size S (also in XS) One Teaspoon Rock N Roller Jacket. - size S (also in XS) 100% cotton. Hand wash cold. Front button closure. Chest flap pockets. Side welt pockets. Buttoned cuff sleeves. Stud, rhinestone, and pin accents throughout. ONET-WO30. 19566C. Australian designer Jamie Blakey sewed her first collection in her very own bedroom. Now, nearly a decade later, her Sydney-based line has found an international fan base. Known for clothing that is casual and beachy, One Teaspoon offers pieces that are effortless, cool, and still have that handmade feel.