The Poseidon 2 GTX Jacket is lighter, more flexible, more versatile, easier to adjust and offers even more on-demand airflow, provided by our patented VCS|aquadefence (Ventilation Control System). On top of that, we’ve also added a removable GORE-TEX® storm collar to the jacket, for the times when it gets really rough and tough out there. Outer material 3L GORE-TEX® Nylon 400D fabric 2L GORE-TEX® Nylon 400D fabric SuperFabric® Lining removable thermal lining Features SEEFLEX™Level 2 protection prepared for SEESOFT™ level 2 back protector insert - Type RV prepared for Divided Chest Protector SEESOFT™ level 1 laminated reflection tour fit regular adjustment straps flexisnap adjustment tabs VCS | aquadefence VCS | zippers Detachable Storm Collar V-flap VCS | panel with FidLock® magnetic fastener prepared for Challenger cooling vest insert prepared for vest connector NEON collar hook short and long connection zipper waterproof stash pocket back pocket napoleon pocket inner pockets 3L GORE-TEX® fabric