A new finding is proposed that antimony oxides (Sb2O3) and decabromodiphenylethane (DBDPE) can be both used as solar-reflective particles to develop cool materials. Therefore, the incorporation of Sb2O3 and DBDPE performs as one promising strategy to create cool materials instead of widely-used titanium dioxide (TiO2) for their intrinsic flame retardancy. In this study, the reflectance performance of Sb2O3 and DBDPE into polymer matrix has been investigated, accompanied with the investigation of the effect of hydrophobic surface modification on Sb2O3 on the material surface wettability: With the simultaneous addition of 5 wt parts per thousand modified Sb2O3 and 15 wt parts per thousand DBDPE and 1 wt parts per thousand anti-dripping agent (ADP), the material possesses a reflectance of 86.1 parts per thousand throughout the visible (VIS) light region and 72.9 parts per thousand throughout the near infrared light (NIR) region. The high reflectance leads to a maximum temperature decrease of about 31.5 degrees C in the indoor temperature test and a decrease of about 14 degrees C under natural condition, in comparison with glass sample. Simultaneously, the limiting oxide index (LOI) value of the material significantly enhances to 28 parts per thousand, accompanied with V-0 rating achieved in UL-94 test. Also, the material surface successfully converts from hydrophilic to hydrophobic, where the water contact angle increases from 87 degrees to 101 degrees. (C) 2018 Elsevier B.V. All rights reserved.