A warm, breathable sleeping bag liner made from mid‑weight Thermolite fabric for extra thermal performance.
It boosts warmth more than the standard Reactor while remaining soft, stretchy and packable.
Ideal for backpackers who need reliable warmth without the bulk of heavier liners.

Features

• Midweight Thermolite fabric provides a strong warmth boost compared to lightweight liners
• Soft, stretchy knit allows freedom of movement and a comfortable night’s sleep
• Enhances sleeping bag warmth while protecting the interior from body oils and dirt
• Excellent moisture‑management properties keep you warm and dry
• Quick‑drying and easy to wash for multi‑day or long‑distance use
• Includes lightweight stuff sack for compact storage