I bought a couple of the Summit Polo shirts based solely on review for a recent trip to Vietnam. I wanted something that would be comfortable in the tropic heat and stand up to multiple wears.
During the course of the 10 day trip I wore the two polos almost exclusively. Through sweat, rain, and humidity, these were amazingly comfortable and staved off odor for days at a time. I washed them by hand in the shower and dried them over a makeshift clothesline and they were ready for another couple days.
Overall, these were amazing. They've made the cut for my overseas capsule wardrobe. The cut, finish and drape of the design is great. The Raglan sleeve design looks and wears perfectly, and the slightly longer sleeve length looks classy and is much better than most polos I've worn.
One thing I will note on sizing, I was convinced by the charts and by a customer support rep that I should wear a medium. I'm 6'0, 40" chest, an athletic/lean 155 lbs, long torso, and 30 in waist. The medium looked kind of baggy on me. The small I exchanged for offered a more fitted, athletic type of fit that I prefer.
One final note is that through the process of asking questions on sizing, ordering, exchanging, and receiving the sizes/colors I wanted, the customer support I received was stellar. They even rush shipped me an exchange before receiving the other shirt back at no cost to be sure I'd have the shirt for my trip. That's going above and beyond.