Evolve Bib Shell
The 509 Evolve Bib Shell pairs up perfectly with 509's Evolve jacket and are ideal for the aggressive backcountry snowmobiler. Two products designed to fit and function as one. The Evolve bib features a mid-rise front and rear bib for snow blocking comfort. Featuring fully seam sealed 5TECH™ fabric, the Evolve is the ultimate in weatherproof & wearability. Its shell construction works perfectly with your 509 base layers for ultimate versatility.