Alpinestars: Removable Level 1 CEcertified back protector.Multi-material streamlined design for superior body fit which enables top to worn under jersey.Evolved design incorporates back panel and elongated rear area for improved performance fit and coverage.Lightweight, stretchable mesh main construction with breathable padded inserts.Strategically placed panels to ensure the vest remains well fitted.Removable, slim-profiled,lightweight shoulder guards.Ergonomic back protector follows natural curve of the back.Back protector pocket can also house hydration pack.Front and back conduits for hydration pack hose.Rear kidney compartments for convenient access.Full length main front zipper for easy in and out.Soft chest and side padding is reinforced for added impact absorption and comfort.BNS compatible when using X or A-Straps.Smartphone compartment on lower back panel with padding and zipper for secure closure.Improved water bladder housing design includes hook-and-loop closure fixings and feeder openings.