Thermarest Parsec LT Minus 18C

The Thermarest Parsec LT -18C is a high-performance, lightweight sleeping bag engineered for serious winter mountaineering and chilly alpine expeditions. With an EN Limit of -18°C, it excels as a dedicated four-season option for backpackers who refuse to compromise on weight or warmth. Whether you are hunkering down in a high-altitude basecamp or navigating frosty shoulder-season treks, the Parsec provides a reliable thermal barrier. Its refined balance of packability and loft makes it the go-to choice for year-round adventurers facing sub-zero forecasts where every gram in the pack counts.

Construction revolves around premium 900-fill Nikwax Hydrophobic Down, ensuring the bag maintains its loft and insulating properties even in damp, high-mountain conditions. This RDS-certified, PFAS-free down is encased in a 100% recycled 20D nylon ripstop shell, offering a soft yet durable finish that is kinder to the planet. The interior features a recycled 20D nylon liner for exceptional next-to-skin comfort. By utilizing more down than previous iterations and employing an updated baffle design, Thermarest has maximized thermal efficiency while keeping the regular bag weight to a remarkable 1100g.

Functional details elevate the Parsec beyond standard lightweight sleeping bags. The Zoned Insulation strategically concentrates down in high-priority heat-loss areas, while the dedicated Toe-asis™ foot warmer pocket rapidly restores heat to cold extremities. A YKK® anti-snag zipper ensures smooth entry and exit without damaging the delicate face fabric, and the cinchable hood effectively seals in warmth. For added versatility, integrated quilt loops allow you to layer tech blankets. An internal stash pocket is also included to protect phone batteries from the cold, making this a comprehensive sleep system for the demanding minimalist.

Thermarest Parsec LT Minus 18C Features

• 100% Recycled 20D Nylon Ripstop, DWR
• 900-Fill PFAS-Free Hydrophobic Duck Down, RDS
• Zoned Insulation
• Toe-asis™ Foot Warmer Pocket
• YKK® Anti-Snag Zipper
• Quilt and Blanket Loops