The featherweight Mammut Men's MTR 201 Rainspeed Jacket keeps you well protected whether you're running down trails in the rain or traveling. A DryTech membrane with fully taped seams gives this 2. 5 layer jacket excellent waterproof protection that's also highly breathable to keep your hardworking body comfortably. Vents at the back help with airflow, and articulated elbows ensure a full range of motion. Mammut also added an adjustable hem for a snug fit, reflective logos to keep you visible in low light, and a chest pocket that you can stuff this jacket into once the sun pops out.