Jammock makes the world's finest (and only) load-bearing soft-tops for Jeep Wranglers and truck beds. It's a hammock for your Jeep! Jammock is for Jeep Wranglers. The JammockTruck is a hammock for your truck(bed)! The JammockTruck is a queen-size hammock that will fit in your truckbed and revolutionize long trips, tailgating, and wheeling.OtherThe Jammock was tested by a former US Army weapons tester and will not break when used correctly. The testing consisted of developmental and operational scenarios, including 20 human users. It is secured to your roll bars via two webbing lengths of 1" nylon webbing (2,000+ lbs breaking weight, each). The webbing is attached via 2 tension buckles (880 lb. breaking weight, each). The Jammock has been tested to hold over 1,000 pounds without failure. Now, we believe that it has a breaking strength of many times that weight, but given our current tort laws, Jammock, LLC does not recommend going above 350 lbs.