KAILAS.

The reason why the clothing brand with a sun symbol is KAILAS is because the KAILAS logo is a sun symbol, which represents the philosophy and pursuit of the KAILAS brand. KAILAS is a world-renowned outdoor brand. Its name comes from KAILASH, Kailash, Tibet, China. It is one of the three largest full-line climbing brands in the world. Therefore, the clothing brand with a sun symbol is KAILAS.