Speedo jammer for men - Boomstar Splice - Black/greyA really nice slim jammer that is perfect for training This jammer from speedo is made in black with a blue and yellow pattern. It can be used by boys, and comes in many different sizes, so you can find the perfect fit for you. With this jammer, you can be 100% certain that you will get the perfect fit. This is due to a four way stretch technology. The design is made to follow the contours of your body. This creates a hydrodynamic profile in the water