The Columbia Declination Trail is a nice shirt that is less about outdoor performance than poolside casual wear.  The modal/polyester blend material is a big plus - it is soft and very comfortable.  The cut is very roomy and casual, perfect for wearing un-tucked with a straight cut around the bottom.  Again, there's nothing about this shirt that says "technical" or "outdoors" - no claimed UPF protection, no vents to help with air circulation, etc.  Look elsewhere for something to wear fishing, hiking, etc.  If you're looking for a handsome, comfortable casual wear shirt then this is a winner.