Magnum XL should do just fine.
I'm approx. 8.5 x 6.25". I wear Magnum Large. These are a little tight, but the length is good. I've tried the XL. They fit my girth better, but are too long.
According to your measurements, the Magnum XL should be a good fit, not too tight, no slippage, right length.
Hope this is helpful.
Robert |