Grand Trunk Visco Blend Sleep Sack (Green) 100% Viscose Imported Also works as a sleeping bag liner in cooler temps, adding an extra layer of warmth to your bag Washes easily and protects you from untrustworthy hostel bedding Perhaps best of all, its made from sustainable, renewable, organic fibers, so when you choose the Sleep Sack, youre pitching in to keep the planet healthy Material: Viscose An ideal sleep sack for traveling and camping in warmer climatesits all you need to sleep in on a tropical night|Also works as a sleeping bag liner in cooler temps, adding an extra layer of warmth to your bag|Washes easily and protects you from untrustworthy hostel bedding|Perhaps best of all, its made from sustainable, renewable, organic fibers, so when you choose the Sleep Sack, youre pitching in to keep the planet healthy|