The NP Neil Pryde 2018 Thermalight Ladies Long Sleeve Top from Oceansource is a thinner base layer made from lightweight polypropylene that wicks away moisture and retains body heat

Size   Chest size

XXS   29"-32"

XS   31"-34"

S   33"-36"

M   35"-38"

L   37"-40"

XL   39"-42"