Hike Further, Carry Easier Meet your new trail partner. Monterra's adjustable trampoline back panel gives you superior carrying comfort, while multiple access points mean no more unpacking everything to find what you need. We've included smart pocket organization, plenty of gear attachment points, and durable, PFAS-free weather-resistant materials. Choose between 50L and 65L sizes for your perfect fit. However far you're going, Monterra makes the journey more comfortable.