Made from Thermolite synthetic insulation, the Reactor provides an impressive level of warmth for its weight, while remaining extremely breathable.  The extra layer of insulation adds up to 15 degrees F / 8 degrees C of warmth to your sleeping bag, making it the ideal item to transition your summer bag to cooler temperatures.  Use it alone in warm weather for a lightweight, packable sleep solution!

Features:

• Lighter weight, more packable than fleece
• Adds up to 15 degrees F / 8 degrees C of warmth to a sleeping bag
• Mummy shape with a box foot
• Draw cord hood with mini cord lock
• Packs into its own 3" x 5" sil nylon stuff sack

Specifications:

Colour: black
Weight: 8.7oz