|KLOGS Springfield Polyurethane Shoe in Navy. These klogs will easily become your favorite as comfort and practicality unite in a molded closed back design. The higher back provides a more secure fit while retaining easy on/off styling. Flexible, light-weight, and shock absorb- ing, these klogs may be the most comfortable shoes in your closet. Slip resistant, oil resistant and non-marking. Durable, easy to care for and washable. Ample color selection and versatile style to go with your favorite anything.. KLOGS are meant to have a slightly looser fit than most other footwear. It is normal when wearing KLOGS to feel your heel lifting up and down with every step. Polyurethane Sizing – KLOGS does not offer half sizing in our polyurethane styles. Therefore, if you wear a half size, you should consider sizing up. Please see KLOGS Fit Chart for Men and Women individual style and gender fitting. KLOGS polyurethane does not stretch over time. The way your polyurethane klog fits the day you purchase it will be the way it fits over the life of the product.