Never worn KEEN Clearwater CNX sport sandals. Women’s size 11. New in the box (never had tags attached). Black with a few bright yellow accents. Washable. Here’s the story… way back i ordered two pair: a 10.5 & an 11. The 10.5 fit perfectly and i still wear them. I should have returned the 11s, but never did! Based on how they grab the back of the heel, they are best sized for a true size 11!