That's not quite accurate. Apex Nanos and Forest River Geo Pros do have a foam center for insulation sandwiched between two layers of a composite material called Azdel (no rotting and no stick/tin), vacuum bonded to a fiberglass exterior and a TPO or EDPM roof. It's much sturdier and can handle tree limbs and hail much better. But they don't fold down like Hi-Los and TMs, are about 400 pounds heavier and reduce gas mileage to about 10 mpg. Yet they are also $5,000 - $10,000 less expensive and equally well-built. So, there are lots of trade-offs to be considered between TMs and Geo Pros, at least for my wife and me. Thanks for your input!
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