Assless MankiniIf youre looking for something a little more daring to wear for your next party, then look no further. Proudly display those muscles and ass cheeks in our assless mankini costume. Turn some heads and flex your biceps. The shiny black material with a red lined rim is a fantastic fancy dress idea for occasions ranging from Stag dos, to fun nights out and student parties. The item is made from a stretchy fabric and features an open rear.