The Arc'teryx Alpha SV Bib Pant is built for severe weather conditions in unforgiving environments, the Alpha SV Bib delivers serious alpine performance. Constructed from N80p-X Gore-Tex Pro with Most Rugged Technology, the Alpha SV Bib offers waterproof, breathable protection and outstanding durability. Incredibly rugged N155p-X Gore-Tex Pro reinforces high-stress areas, an embedded Recco® reflector aids search and rescue, and the streamlined, articulated fit moves with you as you climb. The suspenders are adjustable.