An Effective, Affordable Waterproof Case from SKB The SKB 3i-1813-5B-C waterproof utility case is constructed of molded high-strength polypropylene copolymer resin, with a gasketed water- and dust-tight design that's highly resistant to impact and corrosion. The SKB 3i-1813-5B-C includes a continuous molded-in hinge, a trigger release latch system, an over-molded rubber grip handle for comfort, and an automatic ambient pressure equalization valve. At Sweetwater, we've found that the 3i-1813-5B-C's customizable cubed foam makes it a very versatile case. Sized to comply with airline regulations, the SKB 3i-1813-5B-C is made to go practically anywhere!SKB — no-compromise protection SKB cases deliver top-notch protection wherever you need it. From their extensive collection of rugged, molded rack enclosures and portable cases to their guitar, keyboard, bass, amp, and microphone cases, when you protect your gear with SKB, you can travel anywhere with your crucial equipment safely in tow. SKB holds their cases to the