The Arc'teryx Beta Jacket in size M is a stylish and functional jacket perfect for the fall season. Made with polyester insulation, this jacket is breathable and designed for active outdoor enthusiasts. The attractive lampyre/acid green color adds a colorful touch to your wardrobe, while the regular fit ensures a comfortable and flattering silhouette. Whether you're layering for a chilly hike or running errands, this jacket is a versatile choice.