Thanks to their Powerhook design – with a bendable wire on the ear hook – the JBL Endurance PEAK II adapt to the shape of the user’s head, offering an ergonomic fit. To withstand tougher training conditions, they are sweat-proof and waterproof according to IPX7. Their shape conveys dynamism, an impression that is underlined by the lively surface design. The shiny black Powerhook lettering on the back is particularly striking.