I absolutely love the Whisper sandal.  I own 5 pairs of the Whisper and 10 other styles of Keen sandals.  They are all terrific, and they all fit beautifully.  I've always struggled finding shoes for my size 10, C width feet, and Keen shoes always fit me well.  I thank heaven for the Keen company.  My older Keen sandals just won't fall apart.  Have worn some of them for at least 10 years, and they are incredibly still in good wearing condition.  Amazing shoes!