Sea To Summit Reactor Fleeceweight

The Sea to Summit Reactor Fleeceweight is the warmest bag in the Reactor range. It provides an increase in insulation of around +8°C. In our experience, this sleeping bag liner provides an extra warmth of around +8°C. It can be used as a sleeping bag liner or on its own in warm conditions:

• Winter use: provides extra warmth when used with your synthetic or down sleeping bag.


• Summer use: you can use it on its own, as a lightweight sleeping bag.

For greater versatility and comfort, this Reactor Fleeceweight bag features zipped openings for your arms and a drawcord in the hood.

The fabric used is a combination of Thermolite and grid fleece, offering a slimmer, warmer bag than a traditional fleece-filled sleeping bag. HeiQ Fresh technology provides long-lasting odour control.