Great shirt. As expected form Outdoor Research, the construction is sturdy, the materials excellent, and it's designed for function with a bit of style.I have owned and enjoyed the Outdoor research Wayward long sleeve shirts, and the Baha is similar in style but optimized for hot weather (exactly what I was looking for). The material is lighter and more breathable, and vents are hidden along the stitching of the shoulders and upper back (I can poke a finger through each vent, but wouldn't realize they were there just by looking at it as they lay flat). The fabric also has better wicking ability than the wayward (tested by dropping water on both fabric types to see which is absorbed/wicked more quickly) I compared "breathability" by forcing air through the fabric of the Wayward material, then the Baja. The Baja showed markedly lower resistance, demonstrating greater breathability. The stretchiness of the fabric is mild, but enough to appreciate it. The fit is true to size for Large, but just slightly smaller in some ways than the comparable Wayward shirt. At 6'2'' 185 lbs average build, the Large fits well. However,when the sleeves are rolled up, it's only just big enough for my bicep (which is not particularly big). Guys with very big arms may not be able to comfortably roll up the sleeves without buying a bigger size. My arms are on the long side even for my height (size 36-37 in dress shirts), and the sleeve length of the Large is sufficient (but probably closer to a 35 in dress shirt sleeve length, which would be typical for a large).Other features: The right breast pocket is zip closed to keep items secure. There is a hidden snap fastener on the underside of the collar that allows you to fasten the collar in the "up" position to help protect your neck from the sun (Fabric is UPF 50+). Sleeves have roll tabs hidden inside to secure them in the rolled up position and prevent them falling back down. The material is subtly textured to give a slightly more natural look.This is my new standard day to day casual shirt for warm weather. Will update if any problems develop, but doubt they will.