21st Birthday Diamante Hip Flask Forget the key of the door. This cool stainless steel hip flask is what everyone wants. Designed with the 21st birthday girl in mind, this 3oz pink leather look hip flask boasts a gorgeous diamante band above & below the words ‘ Happy 21st Birthday’, in silver. The perfect vessel for their chosen birthday celebration tipple, the stainless steel 21st Birthday Diamante Hip Flask features a stay-put hinged screw top. Measuring Approx. 7cm wide, 11cm tall & 2cm deep, the hip flask is elegantly displayed in a suitably sophisticated black presentation box. Cheers!