LAS VEGAS — Chances are you have one pair of headphones for everyday use and another pair for working out. Sol Republic aims to unite your dual-headphone existence with the Relays, or "crossover" earphones designed for both use cases.
The Relays are small, earbud-style headphones with rubberized, flexible rims called FreeFlex that encircle the "sound engine" and fit in any ear. The rim helps secure the earphone in your outer ear, and an even more flexible "bud" fills the inner opening of your ear canal. The package comes with four different pairs of ear tips in various sizes.
See also: The 7 Best Headphones for Gamers
I tried out the Relays, and they're one of the most secure-fitting and comfortable earbuds I've ever worn. My ear canals are quite large, too, and few earphones have managed to fit snugly inside.
One effect of the snug fit is great isolation. Short of a noise-canceling model, the Relays do one of the best jobs of keeping outside noise out. When a fellow passenger on a train decided to talk loudly on her cellphone, I donned these earphones to tune out the irritant (it's called a quiet car for a reason, lady).
Sound quality was excellent. I fired up some downloaded music on my iPhone and nodded along with the jangly guitar of Old '97s "19" and Gord Downie's haunting vocals in The Tragically Hip's "38 Years Old." The sound capacity is decent, too: Cranked to maximum, my ears were definitely uncomfortable, though not overwhelmed.
This terrific sound quality gives the Relays crossover appeal: They're the sport headphones you'll want to keep wearing. It helps that they look great and are sweat- and water-resistant. The Relays come with an attached clip that secures the cable while moving around and features an in-line microphone, too.
The Relays are available now from Verizon for $79.99, but just in black. Other retailers will begin carrying them in black, blue and yellow in February.

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Images: Mashable, Christina Ascani
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