Forcefield Airo Vest with L2 Back Insert XL The Airo Vest incorporates a highly flexible, breathable and removable CE approved chest (L1) and back (L2) protection in an ergonomically designed technical fleece vest. The Airo vest shell is constructed of lightweight, breathable and comfortable Coolmax breathable fabric Featuring hand pockets on the front and flat lock stitching throughout the Airo will provide years of comfortable service.