---
title: "Sea To Summit Reactor Fleece Liner Mummy"
name: "Sea To Summit Reactor Fleece Liner Mummy"
brand: "Sea To Summit"
description: "Sea to Summit Reactor Fleece Liner Mummy is a sleeping bag liner made from Thermolite® All-Season EcoMade hollow fibers and polyester yarn."
handle: "sea-to-summit-reactor-fleece-liner-mummy"
sku: "ASL031031-191902"
ean: "9327868158355"
gtin: "9327868158355"
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md_url: "/p/sea-to-summit-reactor-fleece-liner-mummy.md"
locale: "en"
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currency: "EUR"
price: 70.1
price_formatted: "€70.10"
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category: "Sleeping bag liners"
category_path: "/c/sleep/sleeping-bag-liners"
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  - name: "Sea To Summit Reactor Fleece Liner Mummy"
    url: "/p/sea-to-summit-reactor-fleece-liner-mummy"
last_updated: "2026-10-13"
---

# Sea To Summit Reactor Fleece Liner Mummy

Brand: Sea To Summit · Category: [Sleeping bag liners](/c/sleep/sleeping-bag-liners.md)
Liner size: Standard, Compact · Material composition: Polyester, Thermolite All Season EcoMade · Weight: 420 g

## Offer

- Price: €70.10
- Availability: Out of stock
- Condition: New
- Buy on the website: [HTML product page](/p/sea-to-summit-reactor-fleece-liner-mummy)

## Description

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?

Sleeping bag liner made of Thermolite® material for increasing thermal comfort by up to 22%.

## Specifications

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.

## Materials

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.

## Specs

- Color: Orange
- Liner size: Standard, Compact
- Material composition: Polyester, Thermolite All Season EcoMade
- Weight: 420 g
- Woocommerce product id: 106288
- Brand: Sea To Summit

## Variants

- Sea To Summit Reactor Fleece Liner Mummy - Compact · SKU ASL031031-191902 · EAN 9327868158355 · €70.10 · Out of stock · Compact, Orange
- Sea To Summit Reactor Fleece Liner Mummy - Standard · SKU ASL031031-191904 · EAN 9327868158379 · €80.20 · Out of stock · Standard, Orange

## Related

- [Sea To Summit Silk Blend Liner Mummy](/p/sea-to-summit-silk-blend-liner-mummy.md)
- [Tyvek 75x230 cm (for 1 person)](/p/tyvek-groundsheet-230-x-75-cm.md)
- [Hyperlite Mountain Gear Stuff Sack Pillow](/p/hyperlite-mountain-gear-stuff-sack-pillow.md)
- [Sea To Summit Ultra-Sil Dry Bag](/p/sea-to-summit-ultra-sil-dry-bag.md)
- [DD Hammocks SuperLight Pegs 6 pcs](/p/dd-hammocks-superlight-pegs-6pcs.md)
- [Flextail ZERO Pump 2](/p/flextail-zero-pump-2.md)
- [Sea To Summit Ultralight Insulated](/p/sea-to-summit-ultralight-insulated.md)
- [Sea To Summit 1,8 mm Reflective Cord 10 m](/p/sea-to-summit-reflective-accessory-cord-1-8-mm-10m.md)

## Shipping and returns

- [Shipping and payment](/shipping-payment)
- [Returns](/return-order)

## Images

- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/e74959c63c84841d13b3c81f75abe0ff-01KWHVMVH2NG1S3SED2RK2BWXV.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/bc073506d98d7663ecee977afc129d59-01KWHVMVHD1VMCYKRJEZJA80EX.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/dc6a9c3e22bdccd71ebc17d92a370a23-01KWHVMVMR23XD58GV5G52AM07.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/15cc5a055084d0ff8c9e047fcfdd6d7e-01KWHVMVN9F9R19PG8DSA9V93N.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/bba8e7c05b3d7509eaa96726685748fa-01KWHVMVPCGSNVKF5EDXT8BCW0.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/da187829fb53c52b7c26fd3c5a45c1df-01KWHVMVRJD0HX49D398H79ASQ.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/27b0b026885a6a4fe94c1246f33daeb5-01KWHVMVTHSMGHJ0YRTR894N93.jpg)
- ![Sea To Summit Reactor Fleece Liner Mummy](https://media.gramino.com/medusa/165636a0644aaec410d381109b835798-01KWHVMVSPMQ5BR9NBSH2BYGQE.jpg)

## Identifiers

- SKU: ASL031031-191902
- EAN: 9327868158355
- Handle: sea-to-summit-reactor-fleece-liner-mummy
- Brand: Sea To Summit

This product is also available as [HTML](/p/sea-to-summit-reactor-fleece-liner-mummy).

Category: [Sleeping bag liners](/c/sleep/sleeping-bag-liners.md) · [Sitemap](/sitemap.md)

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