This is definitely unisex but it could be a men’s medium, I am unsure, please check measurements

Stay warm and comfortable during your workouts with this adidas Climawarm Women's Athletic Gaiter Runners Hoody. The long sleeve, drawstring closure, and high neck provide optimal coverage and protection from the cold. The hoodie is made of a wool blend, spandex, and polyester blend material that offers lightweight warmth, while the hooded design provides extra insulation.

The hoodie comes in a blue color and is designed for unisex adults in size M. It is perfect for gym & training, weightlifting, walking, running & jogging, and can be worn in winter, fall, or spring. The hoodie features a zip pocket and pockets to keep your essentials secure. The product line is adidas Athletics, and the brand offers quality and style that you can trust.