Vehicle BackPack's "Rail Mount" Accomodates Carts and Sleds 26"-44" Wide [Inside]. "Adjustable Saddles” Secure Pop-Up Ice Tents, Hub-Style Hunting Blinds Even Larger Canopies, “In or Out” of the Bag! Simply Adjust the Saddles to Fit the Length of Your Tent, “Cinch-Up the Straps and Go”! No Worry About Torn Bags and Worn Out Zippers! All Mounting Hardware Included. Kit Includes Rail Mount and Tent Lock'R. To Haul Another Accessory In Tandem Order Combo 2 Below.