Nine times out of ten, Im having to use inserts because apparently children dont have arches so the insoles are flat and lack padding. 5mm plug at all as this item is certainly MFi compliant to work perfectly with Apple products. There is an additional set of up/down controls on the right earbud cable that allows the ability to vary the degree of noise cancellation -the iPhone app has a much better method. The cooling fan helps the PS from overheating. I have been wearing reef flip flops for a very long time (mostly phantoms), and I like these more. Wrong size was sent. This was so I could pair the speakers. Sony has upped the quality of their standard offerings, apparently. And it is cheap. This wash was perfect in softening the wool and giving it a lovely cedar ?woodsy? smell that is perfect for the ?manly? man yet still subtle and feminine for the ?girly? girl!