Sea to Summit

Reactor Liner (adds up to 8°C)

Sale price$71.00
Only 3 units left

Introducing the Reactor Liner by Sea To Summit, the perfect companion for your outdoor adventures. Engineered to enhance your sleeping bag's thermal performance, this innovative liner adds up to 8°C of warmth, ensuring a cozy and comfortable night's sleep even in chilly conditions. Made with high-quality materials, the Reactor Liner is lightweight, compact, and easy to pack, making it an essential gear for camping, backpacking, or any outdoor expedition. Stay warm and sleep soundly with the Reactor Liner.


  • Enhances sleeping bag's thermal performance by adding up to 8°C of warmth
  • Lightweight and compact design for easy portability
  • Made with high-quality materials for durability and comfort
  • Ideal for camping, backpacking, and other outdoor activities
  • Helps regulate body temperature for a comfortable night's sleep
  • Can be used on its own in warmer weather or combined with a sleeping bag for extra warmth
  • Machine washable for easy cleaning and maintenance
  • Includes a stuff sack for convenient storage and transport
Material: Polyester blend
Weight: 280 grams
Dimensions: 210 cm x 90 cm
Temperature Rating: Adds up to 8°C of warmth
Compatibility: Fits most standard-sized sleeping bags
Care Instructions: Machine washable, line dry
Included Accessories: Stuff sack

We offer free delivery on all orders over €75, and €5.95 for all orders under €75.
 -We aim to ship all orders placed before 3:00pm on the same business day and have it delivered next-day, but in busy periods can take longer, so allow for up to 3 business days.

We accept returns within 30 days of receiving the item, either in-store or by post.
- All items returned must be suitable to be sold again as new.
- All returns can be organised with An Post click & post, and will be fulfilled as soon as they arrive back at our store. Click here to start a return

At Great Outdoors, we understand the need for groups, companies and individuals to order products in bulk. Whether you are looking for a gift for your hardworking crew, jackets to outfit your dedicated sales team, or anything else that may come to mind - we would love to help!

Simply contact Paul from our corporate team, contacted at with any enquiry, big or small and we will do our very best to get the right items at the right price!

Same day delivery to Dublin

Free Delivery
To all 32 counties on orders over €75.00

Over 5000 Satisfied customers

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Shipping & Returns

Great Outdoors ships throughout the EU via An Post & National Carriers. Orders over €75 qualify for Free Next-Day Shipping in Ireland, otherwise, a flat rate of €5.95 will be charged per order under €75, for Next-Day shipping. We will aim to ship orders placed Monday - Friday before 12:00 pm the same day, although this is not guaranteed.

Orders placed on weekends will ship on the following Monday. Courier speed is conistent and we try our best to give our customers the best delivery service, but delays are out of our hands so we allow for 3 days of delivery.

For more information regarding shipping, including shipping charges and estimated delivery times, please contact us.

If you are unhappy with your purchase, please return it to us within 28 days of receipt. The item(s) must be in resalable condition with tags attached. We accept exchanges for items but that must be communicated to our team and is subject to stock availability.

Please note, we are not able to accept returns for underwear unless the product is faulty or damaged. We advise that you use a recorded courier service to return your item(s) as we cannot be responsible for items lost in the post.

For more information regarding returns and warranty, please contact us.