Never Compromise Again External vs. Internal. Which is better? We&';ve finally settled the debate with a resounding BOTH! The ExoTi 50 takes the best from both internal and external framed backpacks for unprecedented load transfer and carry comfort. The full size 50-liter bag holds plenty of gear for overnight or weekend excursions (or ultralight thru-hikes!), while the X-shaped load lifting compression strap system keeps the load high and tight for a more stable carry you&&';;ve come to love about internals. Meanwhile, its titanium alloy frame and lumbar support plate efficiently transfer the weight to your hips the way only an external frame can. In short, you&&';;ll never have to compromise on backpack styles ever again.