Johan Voermans is a Dutch online retailer specializing in model railways, scale-model vehicles, model kits, and related hobby supplies. Its extensive catalogue serves collectors and model builders, with products organized by scale, manufacturer, railway system, and category. Railway offerings include steam, diesel, and electric locomotives; passenger and freight cars; train sets; trams; narrow-gauge models; and track, switches, and railway accessories. The shop also carries spare parts such as wheels, motors, couplings, gears, lighting, and pantographs, alongside digital control equipment, wiring, and lamps.

Beyond trains, customers can find model cars, buses, and trucks, including vintage and branded collectables, as well as slot-car racing products and accessories. The broader range includes military, ship, and aircraft models; construction kits; paints; scenery; buildings; trees; bridges; and books covering railway and model-making topics. Products span many established hobby brands, including Märklin, Fleischmann, Roco, Piko, Trix, Faller, Revell, and Herpa. The website states that customers should not pay immediately through the site; an email is sent with payment information after an order.