Wolf Pack Pro - by Front RunnerOur new stackable storage boxes are made from the same impact resistant plastic, and now feature new extra secure latching, providing extra durability while also sealing out water and dust, so your gear will stay safe, dry and cleaneven when your rig gets dirty. PLEASE NOTE: Due to varying internal air pressure, the lid of the Wolf Pack Pro may occasionally prove difficult to open due to its sealing ability. To open, apply moderate pressure to the lid