Men's middle layer Kilpi ERIS-M The KILPI ERIS-M stretch sweatshirt is made of a material called OPTI-STRETCH with four-way elasticity. The material adapts perfectly to all movement, effectively dissipates moisture and dries quickly. The sweatshirt has two pockets, a zippered chest pocket and a high collar to protect the neck from the cold. It is fastenable, very easy to store and thanks to the flat seams it does not restrict movement. The Eris sweatshirt is a very comfortable second layer for trips to the mountains and all outdoor activities. Material: 100% polyester