The NEMO Tracer Blaze Sleeping Bag Liner transforms your sleep system with intelligent dual-purpose design that works as both a temperature-extending liner and a standalone ultralight sleeping solution for warm weather camping. Engineered with THERMOLITE® EcoMade fabric featuring hollow core fibers from 100% recycled yarns, this liner delivers exceptional warmth-to-weight performance while keeping your environmental footprint light. The integrated FUZE™ antimicrobial technology uses non-ionic silver to naturally inhibit bacteria growth and prevent odors, extending time between washes during those epic multi-day backpacking adventures. Contoured to match NEMO's signature Ultralight Spoon shape, it creates an efficient, comfortable fit that maximizes thermal performance whether you're extending your sleeping bag's range for shoulder season trips or traveling ultralight on summer overnights where every gram counts.