Mission Darts Players – Surround – Dylan Slevin. Upgrade your darts setup with the Mission Dylan Slevin Dartboard Surround. Made from a high-quality flexible polymer material, this surround features Slevins logo and the Mission branding. Add a touch of personality and style to your darts equipment at home with this signature surround designed for the PDC tour card holder. This surround has been engineered to be extremely durable and will fit tightly around a steel tip dartboard.