I love Keen shoes and now own several pairs (BTW, please keep manufacturing some in the US - I'll buy 'em, no matter the cost). I really wanted to like the Grayson slip-ons but the sizing was just too large. Speaking only for myself, the width and materials were fine; the idea of a robust, leather slip-on is just what I'm looking for. Size-wise though and in view of my other Keen shoes, these were one [if not two] sizes too large. I can comfortably slide the fingers of one hand between my heel and the shoe. Generally speaking, I can order Keen shoes online and be confident of the sizing, hence my disappointment with these. In other respects though, the style is very practical and if sized correctly, they're undoubtedly comfortable. I'd recommend them but only if you try them on in-store before buying.