Keen Sienna Wool Slip on Mary Jane’s. Step into comfort and style with Keen's gray flats, designed with a cushioned sole for all-day support. The slip-on design ensures easy wear, making them perfect for any occasion. These versatile shoes are a must-have addition to your footwear collection. Color: Gray Wool with black elastic strap and soles. Size: 9 Wool makes this a breathable shoe. Reviews say they run small and are for a more narrow foot. Min marking sole. Removable foot bed. Would be great as an indoor slipper. Pet free smoke free environment. Keen Sienna Wool Mary Jane’s Slip on Slipper Wool Size 9 Narrow Keen Sienna Wool Mary Janes