H2O Audio Protective Case for TRI and TRI PRO Protective Hard Shell Carrying Case Designed to fit TRI, TRI PRO and SnowPRO Extra Protection: Engineered ultra-hard shell protects against knocks, impacts, bumps, drops, impacts and crushes. Mesh Pocket: Internal mesh pocket for USB cable, charger, adapter and other accessories. High-Quality Zipper: Smooth and sturdy zipper.