If buying gear for hot weather riding DO NOT BUY BLACK GEAR !
For highway riding in Hot Weather I find that my loose fitting Darien Jacket with the sleeves and all the vents open works as good as anything that I have tried. Charge up your Camelback with ice water and wear under the Darien and on top of a wet LD Comfort Long sleeve shirt. I get the best cooling from keeping the sleeves wet the torso not so much.
If not on highway when dual sporting a pressure suit over a long sleeve synthetic shirt works for me.
I live in Texas and will not use Black Gear!
ADV Relay Rider 08 (The Texas Connection)
Ride Pooie Ride
Don't stop riding until you get to the crash , you might save it!