Push your limits secure fit headphones with stability ringphilips actionfit digdeep sports headphones stay firmly in your ears so can stay focused on your workout with a unique stability ring for a more secure fit your music stays locked in to keep you in the zone3 ear tip sizes for the otimum fityour actionfit headphones come with 3 pairs of ear tips of different sizes so you get the best possible fitkevlar reinforced cable for ultimate durabilityyour actionfit headphones are designed