Instantly could tell that this was going to fill those voids after getting my hands on it. These boys’ thong or girls’ sandals with back straps for the beach are perfect and with the rubber sole not afraid of him slipping around the pool in Mexico or at our house here is AZ. The inside lining on the upper is similar to neoprene, but it still caused blisters. I, personally, find that the audio quality is sometimes better and sometimes not so much. 👍🏽👍🏽They’re super cute, hold up well & stay tightened so I will def be buying these again when/if my favorites from this set ware out. Beautiful wood grain and feels great in the hands. They sounded amazing, best workout headphones. hope it helps someone whos reading these reviews, debating on buying this. ADJUSTABLE?These are not hard to adjust and they seem to adapt well to all of our heads. After 2 weeks of wear the left ear volume was about 10x lower than right ear.