Our now eight-month-old tester helped us put the sleeping bags through their paces, both for cot naps and overnight sleeping. During testing, we looked out for clever features, such as two-way zips, ...
but two-wheel bags will always be more durable. Hard sided or soft? Hard-sided looks better to most people, but soft-sided luggage withstands the bumps and knocks of travel for longer. Warranty?