Very comfortable.I have to order a full size up in Asics but this sneaker is great! Comfortable, lightweight and very sporty without being too neon bright like many sneakers that are popular now. I have big feet and I don''t need to advertise how big by bringing too much attention to them. These are just right.This style would probably be better for someone with a narrow foot.The only thing is they have a little white fabric stripe that accents the lace area mine was a tiny bit altered but I''m super picky and you can barely notice it unless you look really hard. After a few workouts they will get messed up anyway:)