Klogs Sonora Clogs - Instant wearability. 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.