Both pairs are authentic and purchased in-store. Both were used for running and marathons for around 500km and have been stored in a shoe box after being replaced. I usually replace my shoes at this distance, but some people use the Cloudmonster for 800-1000km, so I think they're fine for trying out running or everyday use. The outsoles are inevitably worn, so please check the photos and purchase if you are satisfied. (Photos 6 and 7) I use a shoehorn every time I put them on, so there is no crushing or deterioration of the heel area that I can feel. (Photos 11 and 12) I think the overall appearance is clean, but I found one tear of about 3mm. (Photo 10, near the black right big toe) This is only a tear on the outside, and there doesn't seem to be a hole on the inside. Shipping will take 2-3 days, but if there are no problems with timing or packing materials, I will try to ship them the same day as indicated by the badge. (Please note that I cannot guarantee this 100%) ・Colors All Black Mist/Blueberry