Sea to Summit Reactor Lightweight Liner

Stay warm, clean, and comfortable with the Highlander Mummy Sleeping Bag Liner. This lightweight polycotton liner adds up to 3°C of warmth, keeps your sleeping bag hygienic, and packs down small for easy travel. Machine washable and quick drying, it’s the perfect companion for camping and backpacking. A simple way to extend the life of your sleeping bag and enhance your comfort outdoors.

The OMM Ltd Core Liner is crafted to enhance the warmth of your sleeping bag and can also serve as a blanket when you reach camp. It features the most effective synthetic insulation, providing maximum warmth with minimal weight. Its design is both warmer and lighter—less than half the weight of a typical fleece—and delivers down-like performance when dry, while still performing well when wet.

The Rab Thermic Neutrino Sleeping Bag Liner will add extra overnight warmth to your sleep system. Built from 130g polyester microfleece, this sleeping bag liner from Rab is a valuable cold weather camping accessory.

The Sea to Summit Reactor Fleeceweight Liner adds serious warmth to your sleep system without excessive bulk. Made from stretch Thermolite® fleece, it moves with you for a more comfortable night’s sleep. Armholes provide extra freedom, making it easy to adjust or sit up when needed. It boosts warmth by up to 8°C while remaining compact and easy to pack. Ideal for cold-weather camping, backpacking, and winter trips.

The Sea to Summit Reactor Liner is an ultra-lightweight sleeping bag liner that uses Thermolite Pro fabric and infrared technology paired with comfortable stretch fabric to provide extra warmth and insulation. It features a mummy shape and a draw cord for added flexibility and premium comfort. This liner is best suited to use in cold conditions.

The Sea to Summit Aeros Premium Pillow offers standout comfort in a compact, travel-ready design. A memory foam layer and soft recycled fabric provide stable, cushioned support for better sleep outdoors. Its contoured shape fits neatly into sleeping bag hoods, while the PillowLock™ system keeps it securely in place. Easy to inflate and highly packable, it’s built for convenience as well as comfort. Ideal for camping, backpacking, and travel.

The Sea to Summit Ultralight sleeping mat range has a single layer of medium resolution Air Sprung Cells™ to give you the lightest and smallest packed-volume mat without compromising comfort. These mats are ideal when going light and fast is your aim and getting a great night's sleep is essential for the next day's adventure.