shralpinist strch 3l bib pants. the shralpinist stretch 3l bibs are designed for motivated mountain explorers who need a storm proof bib that's designed for dynamic movement.? ?the bibs are made from 100% recycled three-layer 30k waterproof / 30k breathable four-way stretch fabric that’s soft to-the-touch and offers supreme protection without ever feeling restrictive. these bibs are perfect for variable weather when mother nature changes her mood every hour, but you keep shredding steadily through it all. they are also packed with functional features like a breathable upper, a large zippered chest pocket, zippered side seam vents and a drop seat. blending performance, comfort and sustainability with an ergonomic fit, the shralpinist stretch 3l bibs will keep you warm, dry and moving at maximum efficiency through any terrain.