i4 SIO Ski Jacket 2021 Size:X-Small Regular fit so there's room

Regular fit so there's room for thermals underneath

Mesh lined venting if you get to warm and need to cool off

For added breathability there is under arm venting helping to regulate your temperature

while the efficient thigh Zipper Ventilation System dumps heat rapidly to cool you down

i4 SIO Ski Jacket 2021 Size:X-Small Regular fit so there's roomThe 2021 mens Descente i4 SIO Insulated Jacket is a strikingly stylish regular fit jacket. This technical jacket is a comfortable 4 way stretch fabric and is 20K waterproof and breathable. This jacket has the Boa system which is a simple closure system that can be adjusted quickly to provide maximum comfort with one turn of the dial. The jacket is insulated and also has the Descente Heat Navi system which converts infrared rays from the sunlight into