I have some Scierra boot foot waders size 7 but more like an 8. Waist size is supposed to be 44inch but I think that is a bit optimistic. I would think 38-40 would be closer to the mark! I can't get in them now and I know my waist has increased but not that much.
They are in really good condition except the pop fastener is broken but can easily be replaced. They were bought brand new from Diver Dave a few years ago but only used a few times.
The zip enables them to be worn more loosely and is not to be confused with zip front waders. It has a belt so the lack of pop fastener isn't such a big deal.
Here are the measurements according to Scierra -
Boot Foot Waders
Size (inch/cm) Shoe Size Eu 40/41
Shoe Size UK 6/7.
Waist (6’’/15 cm down from top) 44’’/112cm
See my comments earlier regarding my observations on the sizing.
£40 posted ono.