This vestibule adds 13 sq. ft. of storage space to the Black Diamond Ahwahnee Tent.This product will be shipped directly from Black Diamond and will leave their warehouse in 2-3 business days. Eligible for UPS ground shipping only.. . Vestibule attaches to either side of the Black Diamond Ahwahnee tent. Two vestibules (each sold separately) may be attached to the Ahwahnee. Floorless design; perfect for keeping gear out of the rain. Hoop pole (included) creates great headroom. The Black Diamond Ahwahnee tent (sold separately) is required for use of this product