Fabric with tight weave so you can wear a backpack without any risk of tearing.
Windproof membrane on front of gilet for excellent protection.
Breathable fabric back panel + Ventilation induced though lack of sleeves
Fleece fibre on inside of component.
Freedom of movement
Back made of naturally stretch material for optimal comfort during movement.
Compressible and light (385 g in L). Perfect in the bottom of the bag.