Troxel Helmets Kirstie Marie Photography Riding helmet Troxel Troxel Avalon English Riding Helmet Show & Safety Black Edition Troxel Riding Helmets. Introducing the Women's Avalon Riding Helmet by Troxel, crafted in a sleek Navy with a modern low profile design. Made with durable nylon, it features bold steel vent covers for ultra ventilation and a matte Duratec finish. The helmet boasts an Extended Coverage FlexVisor, SureFit Elite fit system, and a FlipFold removable washable headliner with Air Channel technology. ASTM SEI certified, this helmet promises safety and innovative technology in one stylish package.