Thermabase is a thin neoprene material, thanks to
SIZE CHART
| Size | Chest size |
|---|---|
| XXS | 29"-32" |
| XS | 31"-34" |
| S | 33"-36" |
| M | 35"-38" |
| L | 37"-40" |
| XL | 39"-42" |
its titanium lining it reflects body heat. it is less stretchy, and warmer than Thermalite, and can be used as thin protection for warmer waters, or to add an extra layer under a thinner wetsuit.