My terry liberator race is about 6-3/4 by 10.5. Fits me like a glove. Fore/aft and tilt are soo totally critical though. The unique thing with the lib-race is is it has a kinda sag and curve up to the nose, sorta settles you into a set area. If it is set right the added surface makes it more comfy, set wrong and it can really make the boyfriend who rides it sometimes quite unhappy