Typical mummy sleeping bags are lightweight and less bulky than rectangular bags — but they’re also notorious for being too snug. That’s why the TETON Sports LEEF Sleeping bags are better; they're nearly four inches wider and noticeably longer than standard industry sizing. The “short” bag is roomier than the industry regular, and the “regular” is more like an industry long. And yes, the “long” is longer than any other mummy bag.