Brooks Rev Sleeveless
Here's what other sites are saying:
Warning! Wearing the Brooks Rev Sleeveless T-shirt may be habit forming. Soft, lightweight knit fabric is highly breathable and has excellent moisture transfer. Shaped to move with a runner in motion. Self-fabric binding at neck and low-friction stitching reduce irritation. Fabric offers a UPF 40 rating to protect skin from harmful UV light. Reflective highlights increase visibility in low light.