---
product_id: 285804118
title: "Reactor Insulated Sleeping Bag Liner"
brand: "sea to summit"
price: "COP 426979"
currency: COP
in_stock: true
category: "Sea To Summit"
url: https://www.desertcart.co/products/285804118-reactor-insulated-sleeping-bag-liner
store_origin: CO
region: Colombia
---

# Packs into tiny 8x13cm sack Adds up to +15°F warmth Ultra-light 245g Thermolite fiber Reactor Insulated Sleeping Bag Liner

**Brand:** sea to summit
**Price:** COP 426979
**Availability:** ✅ In Stock

## Summary

> 🔥 Sleep warmer, pack smaller, adventure longer!

## Quick Answers

- **What is this?** Reactor Insulated Sleeping Bag Liner by sea to summit
- **How much does it cost?** COP 426979 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/285804118-reactor-insulated-sleeping-bag-liner)

## Best For

- sea to summit enthusiasts

## Why This Product

- Trusted sea to summit brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pack Light, Pack Smart:** Compresses into a sleek 3"x5" siliconized Cordura sack for ultimate portability
- • **Breathable Yet Insulated:** Advanced Thermolite fabric keeps you warm while preventing overheating
- • **Designed for Comfort & Fit:** Mummy shape with box foot and drawcord hood locks in heat where you need it
- • **Boost Your Warmth Instantly:** Thermolite hollow-core fiber adds up to 15°F warmth without bulk
- • **Trusted Quality for Every Adventure:** Sea to Summit’s premium craftsmanship ensures durability and skin-friendly softness

## Overview

The Sea to Summit Reactor Insulated Sleeping Bag Liner leverages cutting-edge Thermolite hollow-core fiber technology to add up to 15°F of warmth while weighing just 245g. Its mummy shape with a box foot and drawcord hood maximizes heat retention, and it packs down into a compact 8x13cm siliconized Cordura sack, making it the perfect lightweight companion for 3-season camping and hiking. Renowned for premium quality and comfort, this liner is a must-have for millennial professionals who demand performance and packability on every trip.

## Description

Our best selling sleeping bag liner! The “Reactor” is made from the lightest weight Thermolite, that DuPont has yet approved. Thermolite is a hollow core fiber that provides extraordinary warmth for its weight and remains extremely breathable. Adds up to 15 degrees of warmth to a sleeping bag or, used alone, is the ideal warm weather bag.

## Features

- Lighter weight, more packable than fleece
- Adds warmth to a sleeping bag
- Mummy shape with a box foot
- Draw cord hood with mini cord lock
- Colour of liner is black.Packs into its own 8 x 13cm / 3" x 5" Sn240TM Siliconised CorduraR stuff sack

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000NQQ4VK |
| Additional Features | Insulated, Lightweight, Compact |
| Age Range Description | Adult |
| Best Sellers Rank | #57,714 in Sporting Goods ( See Top 100 in Sporting Goods ) #39 in Camping Sleeping Bag Liners |
| Brand Name | Sea to Summit |
| Closure Type | Pull On |
| Color | One Color |
| Customer Reviews | 4.6 4.6 out of 5 stars (689) |
| Fabric Type | thermolite |
| Fill Material Type | Polyester |
| Global Trade Identification Number | 09327868000197 |
| Item Dimensions L x W | 83L x 35W centimeters |
| Item Weight | 245 g |
| Manufacturer | Sea to Summit |
| Manufacturer Part Number | 119 |
| Material | Polyester |
| Maximum Height Recommendation | 210 Centimeters |
| Model Number | 119 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Occupancy | 1 Person |
| Seasons | 3 Seasons |
| Shape | Mummy |
| ShellMaterial | Nylon |
| Size | One Size |
| Sport Type | Climbing, Mountaineering |
| Temperature Rating | Comfort |
| Thermal Resistance | 8 Watts per Meter per Degree Celsius |
| UPC | 856605160317 698997377047 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Sea to Summit
- **Colour:** One Color
- **Occupancy:** 1 Person
- **Seasons:** 3 Seasons
- **Shape:** Mummy

## Images

![Reactor Insulated Sleeping Bag Liner - Image 1](https://m.media-amazon.com/images/I/71arKk+AobL.jpg)

## Available Options

This product comes in different **Style** options.

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**Shop now:** [https://www.desertcart.co/products/285804118-reactor-insulated-sleeping-bag-liner](https://www.desertcart.co/products/285804118-reactor-insulated-sleeping-bag-liner)

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-10-28*