Originally Posted by kylethepollack
Thermal has Duel Density Foam, Rental has Closed Cell Foam.
Thermal has Pro-Strap, Rental has Rental Strap.
So basically, thermal has better foam and better strap (Duel Cell Foam is softer and more comfortable, Pro-Strap is slightly thicker and will hold up longer). Other than that, they look to be the same.