Our strap system is hands down the strongest and most durable on the market today. Built using climbing grade webbing and construction techniques, we've built a system nearly 10 times stronger than the competition. You might think this is overkill and maybe it is in most cases, but to us too much safety is preferred over too little. The C2) comes with two 240cm chains. The C1 kit for one 240cm chain and one 180cm chain. Hammock carabiners sold separately.