They give you a bunch of different sizes to try out which helps, but at the end of the day to get the full noise cancel they have to sit a little tighter than earbuds. It holds up to 6 shoes, and definitely more if you use the top! I?ve always liked Dearfoams, and these flip flops are very comfy and have a bit of support. I would have gladly given five stars except I had to drill one fastener hole in the aluminum frame (apparently the manufacturer ?punches? the holes and this one only had surface marks. When I went to order a size 4, they were sold out and so I gave him these for Christmas, bc orange is his favorite color. If they were cheaper would definitely by a second pair. I had to rely on squinting at the instruction pictures to determine what to use during each step. Bluetooth is very good and powerful, gets enough distance to roam around the house. Best for households with carpeting. The president shakes John?s hand, pulls him close and whispers into his ear, ?Stop lying to kids.