Thermoball is a fantastic synthetic alternative to down insulation. It is still as compressible, traps and retains heat by using small air pockets on round clusters providing excellent insulation and keeps you warm even when it gets wet. The Hybrid hoodie incorporates this Thermoball insulation throughout the torso with 15D rip stop for durability. The side panels and sleeves are all made with a lightweight, stretchy softshell fabric which is highly wind resistant and breathable too. This makes this jacket ideal for high aerobic activities and hikers that love to move fast in exposed terrain. This jacket comes with a hood, internal elastic hem, bound cuffs and two zipped hand pockets, one which doubles as a stash pocket which is just perfect for space saving on hiking trips.