I may increase to 5 after I take them to the track. They are super cute. I read and normally wear 8 1/2 in ASICS my whole 24 yrs of running no matter which style so I ordered 9 due to other reviews. They fit perfectly with the 1/2 size up versus full size up however. I have a whole line of running ASICS. I have my GT 2000 gels that weigh 1.2 lbs, tri9s that weigh 1.1 lb, gel dS trainers weigh 0.9 lb, 33-FA weigh 1.1(ugly and only bought because on sale), and lastly these Hyper LD without cleats in 0.7 lb the lightest as they should be. I choose my shoe based on surface, weather, length of race wether its run or triathlon to balance support vs speed. My cadence is much higher due to ankle weight load of these shoes. Every single ounce can mean thousands of pounds at 180 or higher spm lifted off ankles during 5k, 10k and even more in half and full marathon. I got my cadence up to 240 w gel dS trainers during 1/2 marathon, my lightest shoe w road support. I didn't really have a need for these cleats since Im not in highschool however I wanted them and want to practice on track again for speed training. You can see most of my current training line that I weighed in. Call me a asics fareeeek but chance are, if reading this, you are too. Only brand I will ever own.