- Polartec(R) Alpha(R) insulation features adaptable breathability that helps eliminate the need of shedding or adding layers while on the move - Intake vents on chest and exhaust vent on the back work to manage overheating when you're working hard - Durable Water Repellent finish sheds water, dirt, and debris - Ergonomically located zippered hand pockets with elastic interior pocket to keep your stuff in place - Zippered hatch for easy access to pockets on mid-layers - Elastic cuffs for added comfort - HPS 29