Overall UPF shirt fits great. The sleeves are long enough. Shoulders fit well. There are no real attachments in the armpits. It even covers my stomach a bit. However, I found the neck quite tight and uncomfortable for prolonged wear. I love the material. It's light and airy. If you wear this in warm weather, this is what you need. It's also clearly a moisture-wicking material, so you shouldn't break a sweat while wearing it. I just wish the neck wasn't so tight.
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