The EV4 Shell Trouser uses a 3 layer dynamic stretch fabric that offers maximum waterproof, windproof and breathable protection for year round. With a zip off function, the bib can be removed completely to turn it into trousers which adds to its overall versatility. This style features an adjustable waistband, articulated reinforced knee patches, generously sized front pockets and multi-functional zip thigh pockets that offer secure storage of phone, pens, and tools.