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Sea to Summit Reactor Fleece Liner Mummy is a sleeping bag liner made from Thermolite® All-Season EcoMade hollow fibers and polyester yarn. Its main function is to increase thermal comfort by up to 22%, according to the manufacturer. The liner also protects the sleeping bag from sweat and dirt, thereby extending its lifespan.
What is the product suitable for?

Sea To Summit Reactor Fleece Liner Mummy is a sleeping bag liner that adds extra thermal comfort and also serves as protection for the sleeping bag against sweat and dirt, thereby helping to extend its lifespan. According to the manufacturer, it increases thermal comfort by 10% when used with three-season sleeping bags and by up to 22% with summer sleeping bags.
In sufficiently warm conditions or in the environment of huts and hotels, you can use just a standalone liner. The advantage of the liner is that, unlike down, it still retains its properties even when wet. Unlike a sleeping bag, you can simply throw the liner in the washing machine and wash it.
The mummy-shaped liner naturally follows the curves of the human body and fits beautifully into a mummy sleeping bag. The collar and hood can easily be adjusted using the drawstring. The bottom part is also equipped with a drawcord and allows for extension and ventilation in the foot area. You can also fasten the liner in a way that allows you to use the hood while keeping your hands outside. The package also includes a practical travel sack.
The Compact size is designed for people up to 177 cm tall. The weight is 390 grams. Length 198 cm, width at the shoulders 80 cm, width at the feet 55 cm.
The Standard size is intended for people up to 198 cm tall. The weight is 420 grams. Length 216 cm, width at shoulders 80 cm, width at feet 55 cm.

The sleeping bag liner is made from a combination of Thermolite® All-Season EcoMade material (60%) and polyester yarn (40%).
The Thermolite material is 100% recycled and contains synthetic hollow fibers that utilize air in the chambers to enhance thermal insulation properties. It has good stretchability, easily wicks moisture, excels at quick drying, and is pleasant to the touch. The liner retains good properties over a long period, even in more demanding conditions.
The Sea to Summit liners are treated with HeiQ Fresh FFL technology, which does not contain biocides and is highly effective at suppressing odor. It uses a biologically based amino sugar polymer to neutralize body odor.
Care and washing instructions can be found on the product's original label.

If you are unsure about which size or color to choose, or if you have any other questions, feel free to contact us via email or directly in the online chat. We are here for you.