A tent system includes a base system, a canopy, and one or more interconnecting members. The base system includes a first base member configured to mount to a vehicle, a second base member, and a hinge pivotally attaching the first base member to the second base member. The canopy includes a flexible membrane having a membrane edge and a canopy fastener coupled to at least a portion of the membrane edge and configured to mate with an interconnecting member fastener. The one or more interconnecting members include an interconnecting member body defining a first longitudinal edge and a second longitudinal edge, an attachment member, and the interconnecting member fastener attached to the interconnecting member body along the second longitudinal edge and configured to mate with a plurality of different canopy fasteners.