The Samaki/Tackle World Bluefin Fishing Shirts are a high quality, comfortable shirt with a UPF 50+ rating, which blocks 98% of harmful UVA and UVB rays, making them perfect for long periods of time in the sun.
Their quick-dry, moisture wicking fabric is ideal for fishing and any other outdoor activities that are prone to getting wet and/or cause heavy sweating as it's very breathable ad light, and also soft to touch.
There's also a small amount of stretch in the shirts to improve that comfort factor even more.