As a chef, I've been wearing Birkenstock London Clogs now for over 20 years in professional kitchens.  I'm on my feet for 10 - 12 hours daily and these shoes never let me down.  Once you adjust the buckle, you can just slip the shoes on and off with ease.  Also, I am a size 8 man and I order the size 41 regular width (I have wide feet).  I should also mention that I have chronic joint pain in my toes and heels, and these shoes take away the pain and make me feel like I am walking on air - they almost massage your feet.  They fit like a glove and shine up nicely too.  Always comfy, never smelly - My favorite shoes, hands down.