Tent Material: Interior material is 100% Highly reflective non-toxic Mylar. Tightly stitched seams to prevent light leakage and ensure strength. Waterproof interior to contain moisture and spillage. Light eliminating Heavy-Duty zipper system controls the access points.Framework: Our push-button metal locking poles create a stabilized frame. We added multiple metal hanging bars for extra weight support and versatility.Floor Tray: Velcro corner straps to eliminate shifting. Removable for easy cleaning.Duct Vents: Drawstring secured ducts to hold venting in place and to prevent light leakage. Number and size of duct vents have been designed for maximum flexibility and functionality. (2) 4.5”, (2) 6.5”, (1) 8” on top.Base Vents: Helps regulate heating and provides alternative options for ventilation. Removable cover with 1-inch Heavy-Duty Velcro to aid in temperature control and adjustable airflow. (1) 17.5” x 5”, (2) 9.5" x 5.5"Rear Duct Vents: Located at the top and bottom of each tent for versatility and convenience. Commonly used for electrical cord placement.