Three-in-One Jackets incorporate versatility for multi-use in a wide variety of activities. The interior stand-alone component is warm, lightweight and wind resistant: 100% polyester 60gm high loft insulation provides exceptional warmth even while damp. The exterior shell is fabricated with stretch to complement the interior component. The shell's 15,000mm HydroBlock lamination provides superior protection and integrates Control Zone Ventilation underarm venting for thermal regulation.