I usually wear an 8 to 8. MIC function - I havent had a chance to use the mic function yet. They are loose in the heel but I?m ok with it because I can wear heavy socks. After 2 days wear, the right shoe is unwarmable. Add the fact that there is soft touch everywhere including the zippers to protect against rubbing against the metal earcups, this is a keeper! Then there is Darcy who is the calmer twin who is still a little sassy but is more low-key than her sister. I think these are so cute and they are super comfortable on. Theyre not meant for noise cancellation, but the soft padding does isolate your ears enough to block out some ambient noises. thought of returning it however since I took off tag and throw the package cover. I recommend this brand forever and ever.