Sonic - more features; less weight! Travel Trailers Ultra Light 8531 PSN . 2017 Sonic SN190VRB LIGHTWEIGHT TRAILER WITH LARGE REAR BATH AND MURPHY BED/SOFA Sonic ultra-lightweight travel trailers offer a host of amenities including an 82-inch ceiling height radius glass shower slam latch baggage doors a one-piece seamless fiberglass roof and dry weights ranging from 2 995 to 4 500 pounds...