@DangerBoy I am not small person, relatively big one. Normally wear XL.
When I lost some weight, shoulders of my Slasher when I'm in the water started to go on the ears level )) - Shasher has a zero tolerance in the belt area.
I got Revenge - it has same floating characteristics (very floaty) and it has internal (inside) strap with buckle for fine tuning in the waist area. More convenient if you plan to play with weight in the future without changing west.