The Core Performance Polo is a 4-way stretch performance polo for golfers who want lightweight coverage through full rounds, with UPF 50 sun protection and moisture-wicking built for long days under open sky. The original Bad Birdie, engineered to move with every swing and hold up from the first tee through the last green. The Stay-Right collar keeps its shape round after round, so the polo reads as sharp on 18 as it did on 1, and the anti-odor finish keeps things fresh well past the round. Lightweight, breathable, and the one you reach for first.