509 Allied Insulated Bib – Stealth Snowmobile Bib with 5FLEX Waterproof Protection

The 509 Allied Insulated Bib (Stealth) is engineered for snowmobile, snow sled, and snow machine riders who demand maximum protection, warmth, and mobility in all conditions. Built with the advanced 5FLEX stretch material, this bib delivers 10K/10K waterproof-breathable performance while resisting impacts, tears, and abrasion—allowing a full range of motion on aggressive trail and mountain rides.

A zoned insulation system pairs 200g Synloft quilted warmth with ultra-soft Aurora microfleece waffle material, delivering powerful heat retention—especially in the seat zone, where riders need it most. The bib is fully seam-taped with reinforced stitching and PFAS-free C0 DWR to shed snow and moisture all season long. New F.I.T. knee protection (Float, Impact, Thermal) provides expanded room and improved comfort, while 3/4-length YKK Aquaguard leg zips ensure easy on/off with boots.

Designed for riders who want durable construction, mapped insulation, and dependable waterproof performance, the Allied Insulated Bib brings premium warmth and mobility to long winter days on the sled.

🏁 Why Riders Choose It

Riders choose the 509 Allied Insulated Bib for its flexible 5FLEX waterproof shell, mapped high-loft insulation, and advanced knee protection—delivering all-day comfort and durability in harsh winter riding conditions.