Best way to describe it is compact & really comfortable - it has a Jazz-style 1.5" nut & Fender spacing at the bridge, but less of a pronounced taper than a Fender in terms of neck profile. Having said that, it doesn't feel chunky & it certainly doesn't feel wide. I have had a go on a couple of Spector & Warwick basses over the years that have a similar feel.
Not sure if that's helpful, but If there are any specific measurements you would like to know then give me a shout...