KLOGS® SONORA #336 Instant wearability; availiable in both full grain leather or oiled nubuck leather this cute functional klog is sure to become an instant favorite . Slip last construction, all that's under foot is our polyether polyurethane; no insole board equals greater ""WOW"" Komfort. Full grain upper leather, offers exceptional quality and long wear; Polyurethane outsoles are slip resistant, non-marking and shock absorbing for an all day ""WOW"" Komfort experience! 1 3/4 inch heel.