Berm Park Fit Men's Tru-Fit MTB Sizing - Enduro style loose fit sizing Product Overview Promesh+™ is our most versatile all-season men's mountain bike jersey material. We matched this dual-layer mesh material with a full-length mesh panel in the underarm and torso for maximum ventilation enhancing airflow and managing moisture when you need it most. Specs and Features Features New Tru-Fit sizing for a more true-to-size fit than previous jersey sizing. Tru-Fit sizing features a more true-to-size fit and fits larger in sizes large through 3X. We suggest if you were between sizes in the past and sized up, you would want to size down in the new Tru-Fit sizing. Features our 100% performance polyester Promesh+™ fabric for maximum airflow and moisture management The underarm gusset adds an increased range of motion New full-length mesh underarm and torso material for max ventilation Printed using Eco-friendly inks Features a longer tail Optimized for on-bike fit UPF30 Built for You We believe in the freedom and positive benefits of cycling. Whether you are a beginner mountain biker, weekend warrior, Enduro racer, or just love riding bikes with friends, we built our MTB gear for you.