If you're not sure, buy one Champion long sleeve hi-vis shirt. Champion calls their hi-vis yellow "safety green", but it looks very yellow to me. I've had their "safety green" and orange long sleeve shirts for a few months and they're great for the money, around $15.
The poly fabric is warm in cool weather, even soaking wet -- I've been caught in the rain a few times. And comfortable so far in temps into the 80s (and up to 91F Thursday afternoon). Doesn't smell funky after getting soaked with sweat, wicks properly. Washes well. Fabric resists snagging. Great values.
Besides the hi-vis colors the Champion shirts include a couple of reflective touches -- logos on the back of the neck and left sleeve near the wrist.
These aren't cycling jerseys -- no rear pockets, no collar zippers. But they are long enough in the tails and sleeves to prevent riding up, while still fitting properly off the bike.
Last edited by canklecat; 05-25-17 at 10:02 PM.