Rab Cotton Sleeping Bag Liner

Your sleeping bag absorbs body oils, sweat, and dirt every time you use it, which can degrade the insulation over time. A liner acts as a barrier, catching that grime so your sleeping bag stays cleaner for longer and requires fewer wash cycles, which preserves the loft and integrity of the fill.

Yes, the rectangular shape provides a generous 36-inch width, offering more room to move than a tapered mummy-style liner. The cotton fabric feels similar to standard bed sheets, making it a comfortable choice if you prefer a less restrictive sleeping environment.

Absolutely. Because it is made of breathable cotton, it works perfectly as a standalone sleep sheet for warm-weather camping or travel in hostels where you want your own bedding. It provides a hygienic layer without the bulk of a full sleeping bag.

While cotton isn't as thermally efficient as silk or synthetic liners, it will add a slight boost of warmth to your sleep system. Think of it as adding a light sheet to your bed; it's enough to take the chill off on a cool night but isn't designed to significantly increase your sleeping bag's temperature rating.

Not at all. Since it is made of cotton, you can simply toss it in a standard washing machine after your trip. It is much easier to wash and dry a liner than it is to deep-clean a full sleeping bag.