I've used these indoors a few times, but they're still in good condition. Please check the photos for any minor stains. You can use these for various activities like running, walking, and fitness. From the purchase site: Outer Material: Polyester Closure Type: Lace-up About this product: Air-light sneakers with the best functionality in the series. Fatigue-resistant: The transparent air sole efficiently disperses the impact on the heel when standing and landing. Significantly reduces fatigue during long walks and standing work. Ultra-lightweight: Lightweight design, weighing only 245g per shoe. Easy to wear and also easy to carry. A convenient pair for travel and business trips. Unisex: The wide range of sizes and universal design can be used by both men and women. Size: 24 cm Color: Gray I have inspected the shoes, but please forgive any oversights. Please purchase if you understand that these are used items. #Women's Shoes #Walking Shoes #Running Shoes #Fitness Shoes #24cm #Lightweight Sneakers