The in-ear headphone game is getting pretty crowded, but Sol Republic has just offered up a new set of Relays that should help you decide which pair is best for you. Built with the idea of all-day wear - whether that is at work, on the road, on the court, or in the gym - the Relay's use proprietary technology, called FreeFlex, to provide a secure fit that will adjust to any ear size with a flexible ring around each earbud that combine with four sizes of ear tips for a proper fit. Inside all this technology, you'll find the booming bass pumping through the tiny drivers that Sol Republic is known for, controlled with an in-line series of buttons and microphone so you can easily switch between music and calls. All the colorways - from white, blue, black, and yellow with more set to come - are water and sweat resistant and are remarkably lightweight. Available now at all leading electronics retailers online and in-store now, including their own online shop for $79.