Reactor Extreme Mummy + Drawcord Sleeping Bag Liner

The Reactor Extreme is designed to add significant thermal efficiency to your sleep system, typically boosting your bag's temperature rating by up to 25°F (14°C). It uses Thermolite Pro technology to trap body heat effectively, making it a reliable choice for cold-weather camping.

Yes, the drawcord footbox is specifically designed for mobility. You can open the bottom to ventilate your feet or cinch it up to walk around your tent without needing to remove the liner entirely.

The liner features HeiQ Fresh odor-control treatment, which is highly effective at neutralizing smells caused by sweat and bacteria. It significantly extends the time you can go between washes, which is ideal for multi-day backpacking trips.

Yes, the liner is shaped specifically as a mummy to match the profile of most technical sleeping bags. It comes in two sizes, so check the dimensions to ensure you choose the one that best fits your specific bag and height.

The EcoMade polyester fabric is designed to be soft and moisture-wicking. It feels similar to a high-quality base layer, keeping you dry and comfortable throughout the night rather than feeling clammy or sticky.

It is very compact. When packed into its included stuff sack, it measures roughly 5.9 x 3 x 4.7 inches, making it an easy addition to your kit without taking up valuable space.