I don't know the blend the material is, but they are relatively thick dual layer wicking fabric. They trap moisture close to your skin to allow the evaporating water to absorb heat that is close to the skin.We did a trip to Texas in 2019 during the hottest days of summer. Rode in 95 plus temperatures. I certainly agree with layers covering up from direct sun ray. Used an evaporative vest worked well stopped at
Buc-ee’s hydrated the vest drank water rode on.. I’m curious what materials are the LDC shorts made of?