The Yurbuds Ironman Series Endure BTE (Behind The Ear) Earphones are the ultimate solution to ear buds that hurt and fall out. These sport earphones feature Yurbuds' patented Twist Lock Technology which guarantees that they will stay in place and deliver rich, clear sound. Introducing the new Yurbuds moldable silicone ear loop for enhanced security. This piece cradles the back of the ear while avoiding pain points around the ear. These earphones are a must for runners, walkers, triathletes, weight lifters, cyclists, skiers, snowboarders, skateboarders, hikers, climbers, or anyone who likes their music on the go. Simply put, they are earphones that won't fall out, guaranteed. The Yurbuds Ironman Series Endure Earphones come with a set of silicone enhancers and our behind the ear earphones. They feature a universal 1/8" gold-plated stereo plug that works with iPods, iPhones, mp3 players, and most other cellular phones. For a full compatibility list, please contact firstname.lastname@example.org."Because Yurbuds are comfortable over long periods of time and stay in place even while sweating, they're perfect for runners, bikers, and amateur athletes who are looking for a headphone solution you barely even notice" -Examiner.com"Yurbuds are comfortable. They stayed in my ears and directed the sound so well that I quickly found myself cranking down the volume to half the level I use with other ear buds." - Chicago Tribune and LA Times "This ear bud model from Yurbuds provides good overall sound with a warm character. The bass is slightly pronounced, with good impact and decent definition...[They] are very comfortable to wear, and fit and stay in place with no problems. Earpiece covers are very stable, even during vigorous head movement." - Consumer Reports"[Yurbuds] soften the edges and they direct the sound deeply into your ears for better bass response. These babies aren't coming out!" - David Pogue; The New York Times For more info please visit yurbuds.com.