These clogs are made of polyurethane and are durable, light weight, waterproof and flexible. Perfect for any domestic activities in the garden or around the house. These clogs feature a removable (and replaceable) cork and latex footbed with basic orthotic support and a microfibre lining. Features One piece polyurethane construction Anatomically designed, removable cork and latex insole Lightweight, durable and waterproof Fitting Notes: The Super Birki is a roomy fit, designed to promote airflow and offer relaxed comfort for gardening or home wear. The roomy fit makes them less suitable for long walks. Those with narrower feet can opt for an additional foam insert to be included with the shoe in order to make them feel more snug. They are reasonably quick to wear in but if you are new to arch support you might find some initial discomfort, however it will ultimately offer support and comfort and help you maintain a better posture while on your feet for lengthy periods.