I have have a pair of these once before and after year that infamous headphone scenario finally happen where one side stop playing . I decide to try out bud , and then after I go through a few pair of bud , run into these again after look for athletic headphone and be SO glad I buy another pair . the sound be excellent , and they cling on to my ear just right . I actually really like that they be not completely noise cancel at lower volume because I run outside by biker and car alot as well as in the gym . I feel like this newer pair too have a more fitted shape which make they comfortable on the ear and not bulky at all . for the sound quality and fit , totally recommend they for work out and sport . if you be go to be on a international flight for over 10 hour , you might need to take they off to sleep , but besides that they be golden .