after enjoy numerous pair , over numerous year ... this time I be try the " DoubleLayer " , maybe I will get double life out of they . never experience a mfr . defect , when a hole finally erode the heel , it be time to buy a fresh pair . once I run into this kid at the Lihue airport in Kauai , he say thanks for wear my uncle sandal ... nice kid ! my 18 year old daughter wear 'em ragged too .