CLO Value

A CLO Value is a unit of measurement that indicates the thermal insulation level of clothing and sleeping gear, with one CLO representing the insulation needed to keep a resting person comfortable at 70°F (21°C). In outdoor recreation, CLO values help campers and hikers select appropriate clothing layers and sleeping bags by quantifying how much warmth different garments or gear will provide. Higher CLO values indicate greater insulation, making this measurement essential for planning clothing systems and sleep setups for varying weather conditions and activity levels.