The Cascadia Thermal Jacket represents a milestone in lightweight thermal technology. Featuring a Thermal Shell polyfill, this is the lightest weight all season thermal jacket ever developed, suitable for both temperate and cold environments. Both outshell and side panels are constructed with spandex to allow optimal stretch - providing unmatched flexibility and ease of movement. Features: High-Performance Stretch Woven Outer Shell with Mechanical Stretch. Full Coverage Attached Hood with Easy-Lock Adjustment. High-Density Brushed Back Knit Panels. Articulated Elbows. Underarm Gussets. Zippered On-Seam Hand Warmer Pockets. Single Hand Hem Adjustment. Partial Elasticized Cuffs.