【Dimension】The ground size of the camping tent 4 person is 94.5”×82.7” with height of 57”. The interior room is rather spacious and roomy, fitting for 4 people. Air mattress with twin size can be settled in totally in the pop up tent.【Easy assembly and Sturdiness】The detailed instruction is attached in the bag, sewing in the inside bag of the instant tent. Usually, 1.5 minutes can set up the whole camping tent. And repair kit is also offered in the bag. Sturdiness is d. On the one hand, the strut made of aluminum alloy along with features of light weight, high strength, good toughness, not easy to break, And ropes and stakes in more than 4 positions can help you firm the camping family tent.【Waterproof 】4 person camping tent’s waterproof performance is excellent mainly because it is the double tent, inside and outer tent. Waterproof performance of outer tent, rain fly, is 2000pm, the bottom tent with 3000pm waterproof performance, which equipped with ability of resisting moderate and light rain. Also, having laminating process in the bottom would effectively avoid rainwater infiltration.【Ventilation】The design of whole four season tents is Chimney Effect Ventilation. From the top, it is a System-Mesh roof. Plus, there are 2 screen windows and 2 doors in the 4 sides respectively. It is beneficial to ventilate and enjoy the fresh air when going camping. In order to avoid mosquito attack, 4 sides has screen windows attaching on the 2 windows and 2 doors.【Warranty】We back product with one year and after- s service. Please feel free to contact us when you have any questions before and after purchase. We can help you solve any questions or concerns about our products.