Extremely poor sound quality and poor built quality. Slipper stretches quickly. as other reviewers have stated the sneakers are not Adidas they are fake as another reviewer stated the shoes should be heavy and they are not the soles are thin and adidas are not as i have stated these are FAKE. My 2 YO son loved these shoes! I bought a third set for my kid and those did the exact same thing! I went through all the troubleshooting on the Bose website, plugged my PC into it to do a manual software update. It is hard to believe a company can manufacture lights for a Marine environment. 01 less and got their same rack complete. Great for for my daughters teen ballet class and they work perfectly. Contacted Amazon and they couldnt find a customer support number or email either.