Sea to Summit Reactor Fleeceweight Sleeping Bag Liner - Regular

Name: Sea to Summit Reactor Fleeceweight Sleeping Bag Liner - Regular
Brand: Sea to Summit
SKU: e75xoha2wc
Availability: InStock

The Sea to Summit Reactor Fleeceweight Liner provides an effective warmth boost for cold condition...

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Sea To Summit Reactor Fleeceweight Sleeping Bag Liner - Mummy - Regula Size 8 - Outdoor Action

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Product Information

Full details

The Sea to Summit Reactor Fleeceweight Liner is an essential upgrade for backpackers and campers looking to enhance their sleep system's thermal efficiency in cold conditions. Designed for those who value versatility, this liner adds up to 8°C of warmth using Thermolite fleece, though it does add a slight amount of bulk to your pack compared to silk or technical fabric alternatives. It is an ideal solution for increasing the temperature rating of existing sleeping bags while simultaneously protecting the internal lining from body oils and dirt, ultimately extending the life of your primary sleep gear.

All features

Material	Polyester
Model Part Number	X183Z
Brand	Sea to Summit

Extended Product Information

FAQs

Can I use this liner without a sleeping bag?

Yes, it can function as a standalone sleep sheet in very warm climates or for hostel stays.

Is the material soft against the skin?

Yes, the Thermolite fleece is designed to be soft and comfortable, providing a cozy layer between you and the sleeping bag.

How much does it weigh?

The Fleeceweight model is designed for warmth; while heavier than silk, it remains highly packable for its thermal rating.

Will this fit a double sleeping bag?

This model is designed for individual use; you would need two liners or a specific double-wide liner for a shared sleeping bag.

How do I know if my sleeping bag is compatible?

Check the interior of your Sea to Summit sleeping bag for small snap tabs near the collar area.

Does the odour control wear off?

The HeiQ Fresh treatment is durable, but its effectiveness may gradually diminish after many heavy wash cycles.

Troubleshooting

Liner feels tangled during the night

Ensure you are using the snap-in attachment points if your sleeping bag is compatible, or adjust the liner to ensure it is centered before entering the bag.

Fabric feels damp after a night of sleep

This is likely moisture buildup from condensation; ensure your tent is properly ventilated and keep the hood adjusted to allow for airflow.

Pros and Cons

Pros

Adds significant warmth to any sleeping bag
Stretchable fabric allows for unrestricted movement
Helps keep your sleeping bag clean, reducing wash cycles
Odour-control treatment is effective for multi-day trips
Compatible with a wide range of sleeping bag models

Cons

Heavier and bulkier than silk or standard fabric liners
Requires more storage space in a backpack
May feel too warm in temperate or summer climates

Setup, Compatibility & Care

To set up the liner, simply slide it inside your existing sleeping bag. If your sleeping bag features the Sea to Summit compatibility system, locate the snaps on the inside shoulder area of the bag and the corresponding tabs on the liner to secure them together.

For maintenance, the liner is machine washable. Because of the HeiQ Fresh treatment, you can often go longer between washes than with a standard cotton or polyester liner. Always wash in cold water on a gentle cycle and hang dry to maintain the integrity of the recycled fibres. Ensure the liner is completely dry before storing it in its stuff sack to prevent moisture buildup.