The relative merits of solar reflective glass and solar absorbing glasses are compared to base glass in the following areas: 1. Direct v. indirect solar gain 2. Direct solar absorption by the car interior 3. Direct solar absorption by human skin 4. UV transmission The comparison indicates that both solar reflective and solar absorbing glasses have advantages in all areas over base glass. The solar reflective glass is superior to solar absorbing glass in reducing heat gain because of its lower solar absorption.