Love this shirt! I walk 4-8 miles each day along the beach on the Gulf Coast of Florida. I wear this shirt over a lightweight wicking T-shirt. Provides great sun protection with excellent ventilation. Super versatile as a second layer. Comfortable fabric gets more comfortable with each wash (that's the nice thing about natural cotton fiber). Pockets are great. This is a great shirt for any outdoor activities, not just fishing. It's also my go-to shirt for hiking in Maine in the summer. I normally wear a size M, and with this shirt the S/P is plenty big; order down a size.