Mated pads are joined using a #10 YKK 65" zipper. When using it on a t, secure it to the t with the straps that hold it when it is rolled up. The photos show how much bigger it is than the standard 72" ground pad that weighs 3.25 pounds when it is rolled up. Luxurious Ground Pad Weights (Single Pads): 72" › 5 lbs. 84" › 5.5 lbs.