When assessing your summer sleeping bag needs consider your personal comfort levels. Some people are naturally hot sleepers, so a light sleeping bag would be a good fit. A three-season sleeping bag would better suit someone who frequently feels the cold.
A rectangular shape summer sleeping bag is naturally cooler and provides more legroom, whereas a mummy design will offer greater heat retention. Domex’s twin zip system makes it easier to ventilate your lightweight sleeping bag on those warm nights.