inside of soles are slippery material and bottle has not much grip, so choose right size shoes for you. I love the carabiner, too— it’s good quality and is large enough that my fingers don’t fumble trying to attach or remove the case, yet very secure. I like them a lot! One pair had a broken button. 6 / 7 . Uses the smaller setting right now but he will grow in to them First of all, I had a listen to the pop track (or as poppy as my tastes dare to venture) ‘Break it to me’ from Muse’s new album ‘Simulation Theory’. If you decide to have a go at them, they can be tweaked to work "decently" with equaliser APO or Razers own surround software. The sound quality is good and it does a good job giving you a sense of noise cancelation, however, I have some issues with it. Although not directly from the factory, I feel that this retailer treated me as if they were.