We took your favorite lightweight, sweat-wicking golf polo and we made it a ½ zip. Then we went ahead and made it water-resistant. You're welcome. - Loose: Fuller cut for complete comfort. - UA Storm technology repels water without sacrificing breathability - Double-knit fabric is super-soft & comfortable - 4-way stretch construction moves better in every direction - Material wicks sweat & dries really fast - Generous 1/2 zip front makes for easy layering - Elbow articulation & compression forearm sleeve for zero distractions - 65% Polyester/29% Cotton/6% Elastane