Ive never owned a Nautica product before, and if their other products are as good as these sandals than I can safely say Ive been missing out. As a forward, I have only tried these for a few hours, so I will update this post if my opinions change at all. The ear cushions are the first thing I tried out as mine had seen better days and right off the bat they make the A40s sound a lot better with getting rid of background noise ie case fans, fan and phone hardly noticeable what so. As I was looking to make this more comfortable and wanted to brag on my choice, I opened it to take some stuff out. In terms of sound quality, I really liked that it had nice bass to it; it was loud and had a bit of tremble effect. Controls are extremely complex and difficult to operate even after following instructions. Awesome product though! The product is solid and installed rather easily. These Muk Luks are:- great quality- always true to size, Medium (7-8)- ultra comfy- very durable- easy to slip on/off- no slip bottom- love the high contrast colors- recommend, again & again! Holds a few shirts well.