Extend the warmth and comfort of your sleeping bag in cold conditions with the NEMO Tracer Blaze liner! Constructed of recycled fabric, this midweight liner adds versatility to your sleep setup or can be used alone in warmer conditions. The Tracer Blaze balances added warmth with a slim spoon shape that gives you more space around the elbows and knees, along with a structured footbox, for a comfortable fit without excess bulk. The liner uses 100 percent recycled THERMOLITE EcoMade synthetic fabric with hollow core fibers for maximum heat retention while still packing down relatively small. It's also treated with Polygiene Odor Control technology, a finish that inhibits odors to help extend use between washings.