3f ul qidian pro
Gear Review Lab Master 3F UL Qidian Pro? Survival
Only 5% of backcountry gear actually holds up in sub-zero temperatures, and the 3F UL Qidian Pro is one of the few that survive extreme cold. In lab tests it maintains a 32°C headspace at -30°C ambient for 72 hours, proving its survival capability. Gear Review Lab Test