Amazing Sleeveless Trail Running Shirt!
"I used the FastRock Sleeveless for the entirety of the 2026 Bighorn 100. I had been on the search for a wide-shouldered sleeveless shirt for a bit and this came out just in time. During the race I planned to pair with some arm sleeves, but the day was overcast so I only used those on-and-off. The wide shoulders worked perfectly with my pack. I took the pack on-and-off multiple times throughout and didn’t need to do any special adjustments. There wasn’t any rubbing at all. I didn’t feel any fabric bunching, either. The fabric-mix of the shirt is great. The top white fabric feels buttery soft and it’s easy to forget it’s even there. It feels tough and durable, but time will tell. The lower gray fabric was highly breathable and also feels tough. There are some small laser-cut holes for enhanced breathability. The slight crop and relaxed fit helped keep my tummy and lower back cool throughout. During the night section I threw on a thin shell over the FastRock and it worked perfectly. No bunching. No bulk. Definitely would recommend this shirt to anyone in search of a sleeveless trail running shirt."
