I needed something that wasnt going to fall out of my ears while running, doing yoga or other workouts. I normally wear between an 8 to an 8 1/2 and the stamp on the bottom of the slippers read 8. These things held up awesomely - theres a plastic insert inside the shoe which evened out the pressure on the underside of my feet when walking on the rocks, which was great. I like the Sony X-55 better because the emphasis is more on the bass even though the Bose is crystal clear and better on the highs - I just cant listen to some music if the drums and bass sound muted. The headphone?s folding mechanism is sturdy, and they do not wiggle at all once positioned. This skin doesnt secure the case from opening which is understandable because its only a skin; only the magnetic closure of the Samsung case keeps it closed, so if I drop it on a hard surface the buds may get dislodged and fall out. I?m going to wear these non stop La sintesi? Le ho rivendute tutte e sono tornato alle Meze! It does have mapping and virtual boundaries, but you need to consider the significant price hike comparing these two particular models. The panels are screwed directly into each other instead of using cam screws, so that alone helps structural integrity.