Daniel Green Portia Women's Slippers. Be 'Green' in the Daniel Green Portia clog, a soft eco-friendly women's slipper that offers lasting comfort. Worn indoors or outdoors, this cozy ladies slipper is not only comfortable, but versatile. The warm and comfortable fleece lining keeps you warm and cozy every night. Wool clog slipper is made from natural and recycled wool. Suede mudguard is soft and durable. Knit collar provides additional warmth. Fleece lining and sock are soft and cozy. Custom molded latex insole offers lasting cushion and comfort. Indoor/outdoor sole is durable and lightweight.