How durable is the UGLI™ hybrid cardboard case? A How durable is the UGLI™ hybrid cardboard case? The UGLI™ Hybrid should last as well as you treat it. We do not recommend that you drop it, throw it or abuse it. If you’re not planning any of those dreadful things the UGLI™ hybrid will be durable enough for its intended purpose. Back to Top Post navigationPrevious post: Why is UGLI™ Hybrid made out of cardboard?Next post: Can anything damage the UGLI™ hybrid’s Cardboard case?