Because of the rectangular shape, it may feel smaller. All grips are a measure of the total length around... no difference there. Our hands are ALL different. Experiment with it, is worth it.I am currently using a RS300 grip size 4 3/8 w/ an overgrip and it definitely feels a little too small/twisting in hand on occasional mishits. Have you guys noticed that tf grips run small compared to other brands? For anyone using 4 1/2 in a tfight would that be more similar to a babolat 4 3/8, im worried it will be too big for me, thanks.