Nemo Forte Womens 35F/2C Sleeping BagSynthetic Plushness for Side Sleeping in the Backcountry Seventy percent of people sleep on their side, yet mummy bags are not designed to accommodate this. Forte has been updated with Primalofts, lightweight, ultra lofty and supremely resilient RISE insulation featuring 80% post consumer recycled content. Fortes classic Spoon shape provides a generous cut at the elbows and knees so side sleepers can shift positions comfortably throughout the night.