Sea to Summit Thermolite Reactor

The Thermolite® Reactor increases sleeping bag performance by up to 8°C with 80g/m² Thermolite® fabric.

The bestselling sleeping bag liner! The Reactor is made from 80g/ m² Thermolite®—the lightest weight Thermolite® fabric available. Thermolite® is a hollow core fibre that provides amazing warmth for its weight and remains extremely breathable. The Reactor adds up to 8°C of warmth to a sleeping bag or can be used alone as a warm weather bag.

• Lighter weight, more packable than fleece

• Mummy shape with a box foot

• Drawcord hood with mini cord lock

• Extends life of sleeping bags by keeping them clean

• Contrasting colour along the top edge makes it easier to find the opening

• Adds warmth to a sleeping bag

• Packs into its own UltraSil stuff sack

• Machine washable

• Length - 210cm

  Width - 90cm

  Weight - 248g