First let me say that I find these tennis shoes so comfortable that I only own 4 pairs (Utility Black/Solar Pink, Blue/Black/Coral, Trace Olive/Black/Lime , black/grey/sunny pink). I have wide feet and most tennis shoes seem to squeeze my feet. However, the NMD R1 STLT offers the most comfortable fit I've tried. Knitted mesh wraps your feet for a sock-like feel, while a Boost midsole provides responsive cushioning like you're walking on clouds. I usually wear a size 11, but I bought a size 11.5