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The 509 Allied Insulated Bib is built to power through the harshest trail conditions with durable 5FLEX construction, 400gsm Aurora Insulation, and advanced knee protection. Engineered for serious riders, this bib delivers 10K/10K waterproof breathability, PFAS-free DWR, and an ergonomic fit for maximum mobility and warmth.
Featuring zonal insulation mapped for warmth where you need it and reduced bulk where you don’t, the Allied Bib uses a unique combination of quilted SynLoft and Aurora microfleece for exceptional comfort. The upgraded F.I.T. (Float, Impact, Thermal) knee protection enhances safety and warmth without compromising range of motion. YKK® Aquaguard zippers, reinforced seams, and full seam taping round out this feature-rich bib, built for all-day performance in extreme trail environments.