Ledil Leila Series Lenses for Cree were especially designed and optimized for XLamp® XB-D and XLamp® XT-E series of Cree LEDs. These lenses were carefully designed to make light distribution as uniform as possible. They are made of optical grade PMMA material with high UV and temperature resistance, allowing for the use of high current and temperature conditions. The optic holders were also molded with high quality PC material. The lenses should be fastened to a heat sink with a PU foam adhesive tape of automotive grade, or fastened with appropriate, Ledil-recommended adhesive.