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The Sea to Summit Reactor Lightweight Liner increases your sleeping bag’s warmth with minimal added weight, using Thermolite® Pro for thermal efficiency.
The Sea to Summit Reactor Lightweight Liner increases your sleeping bag’s warmth with minimal added weight, using Thermolite® Pro for thermal efficiency.
Sea To Summit

Sea To Summit Reactor Lightweight Sleeping Bag Liner in Pewter

€55.00
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Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

RETURNS

We hope that you are delighted with your order from Call of the Wild but if you’ve changed your mind about keeping your purchase, please return it to us within 30 days of your order date. Parcel must arrive with us within 30 days and in its original condition with proof of purchase and we’ll refund the price you paid for the goods. By original condition, we mean that you’ve returned the packaging and labels and that the item is undamaged and unused.

Important note: for safety & hygiene reasons, climbing equipment and underwear may not be returned unless for a warranty claim.

Our return address for postal returns is:

''Web returns''
Call of the Wild
28/29 Castle street
Sligo
F91 E820
Ireland

You can also return your purchases in person to any of our stores.

We regret to inform you that we cannot be held responsible for returned goods that become lost in transit or damaged.

We aim to process any refunds to the original payment method within 48 hours of receipt of goods.

Refunds - we will refund you the price you actually paid for the goods after deduction of costs - see below:

Costs:
The cost of returning goods must be covered by the customer

For our customers outside the EU - Please be aware that we will deduct any import duties or handling fees we incur on the return of 'change of mind' goods from any refund. Your postage or shipping handler may provide you with a 'return of goods' option to select when you are arranging your return which can help reduce these potential fees. It is the customers responsibility to confirm these details with the shipper.

We will issue refunds in the Euro currency (As we receive payments this way) If your transaction was converted to your home currency they may be a difference in the amount refunded to you as dictated by exhange rates on the dates of the transactions. We are not responsible for any exchange rate variations either positive or negative.

How to do a quick and easy exchange

To exchange online purchases, simply complete a new online order for the desired replacement and return the unwanted Good(s) for a full refund. Your refund will be for the price you paid for the goods not includng any shipping charges.

Whilst we acknowledge that this is technically not an exchange service, it is by far the most efficient and fastest way to ensure that you receive the goods you require.

Warranty returns

If you feel any product you purchased is faulty please contact us or return it to us.

If it is clear upon inspection that the items are faulty, which is not due to wear and tear or the actions of the user, we will offer to repair or replace the item with the identical item or refund you the price you paid for the item.

Sometimes it is not clear if the issue is a result of a manufacturing fault and in these cases we may need to send them to the manufacturer for testing. Many of our suppliers have dedicated in-house testing facilities and repair services. Only if the items are deemed by the manufacturer, upon testing to be faulty and it is not possible to repair or replace the item will you be offered a refund.

Zips are typically not covered under a manufacturer's warranty.

Products do wear out, please don’t take offense when we say that wear and tear is not covered by any warranty. If for example the soles on your shoes or boots are wearing down this is never a warranty issue but if you are interested in investing in having them resoled do please get in touch and we will advise if this is possible and how much it will cost or possibly even advise on a suitable third party repair service.

We cannot make any decisions prior to inspecting any claim. Should the item be found genuinely faulty we aim to reach a fair and agreed solution, which may be a refund, a replacement or a professional repair.

Please note that we may need to send the item to the original supplier or a fully certified testing company to seek an independent and professional assessment; this process can take up to four weeks. Also note that zips are typically not covered under a manufacturer's warranty.

A deduction can be made if the value of the goods has been reduced as a result of you handling the goods more than was necessary.

The extent to which you can handle the goods is the same as it would be if you were assessing them in a shop.


Non-warranty defects

Many of our suppliers offer a repair service for damaged or worn goods. If you would like to avail of this service please contact us with details and we will see if it is an option for your product and let you know the costs invoiced.


All returns

  • In all cases goods must be returned to us in a hygienically clean and dry condition. We will not handle items returned to us in unsuitable condition, please remember we are real people too. You will be responsible for any additional shipping costs in returning soiled or otherwise unhygienic items to you. Thank you.

  • We are unable to accept returns for items purchased from any other retailer. In this instance please contact the retailer that you purchased the item from.

  • Please include your receipt or order details with all returns. If you do not have these please contact us prior to returning any goods and we’ll see if we help you track down your purchase information.

Sea To Summit Reactor Lightweight Sleeping Bag Liner in Pewter

Season:S26

Brand:Sea To Summit

Code:53202

The Sea to Summit Reactor Lightweight Liner increases your sleeping bag’s warmth with minimal added weight.

Optimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite® Pro fabric. This fabric uses infrared-absorbing ceramic pigments and hollow-core fibres to trap and reflect body heat, boosting warmth by up to 4°C | 7°F without adding bulk. Designed for versatility and comfort, the stretch-knit construction moves with you as you sleep, while integrated armholes provide complete freedom of movement for unrestricted rest. The liner fits easily inside any sleeping bag and snaps into compatible Sea to Summit bags for secure placement and effortless entry and exit.

Treated with HeiQ Fresh odour control, the liner is quick-drying and machine washable. It helps prolong your sleeping bag’s lifespan by reducing the need for frequent washing, keeping insulation loft and performance intact. It is ideal for backpacking, travel, hut stays, and warmer-weather adventures. The liner is crafted with certified recycled fibres and bluesign® APPROVED materials to minimise environmental impact.

Features:

  • Freedom to Move: Stretch-knit construction and armholes provide unrestricted comfort for any sleep position.
  • Lightweight Thermal Boost: Thermolite® Pro with FIR and hollow-core fibres adds up to 4°C | 7°F warmth.
  • Easy to Clean: Quick-drying and machine washable with HeiQ Fresh odour control treatment.
  • Compatible Design: Fits all sleeping bags and snaps into Sea to Summit bags for secure positioning.
  • Protects Your Sleeping Bag: Reduces washing frequency to maintain insulation loft and extend bag lifespan.
  • Technical Shape and Hood: Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk.
  • Lower Impact Materials: Crafted with certified recycled fibres and bluesign® APPROVED materials to minimise environmental impact.
Technical Information
  • Added Warmth
    Up to 4°C (7°F)
  • Best Use
    Backpacking, camping, winter camping, cycle touring, paddle touring
  • Material
    Thermolite Pro, Thermolite EcoMade, 100% post-consumer recycled polyester (stuff sack: 100% polyester)
  • Shape
    Mummy
  • Features
    Stretch-knit construction, armholes, quick-drying, machine washable, HeiQ Fresh odour control, snap connectors
  • Included
    Ultra-Sil stuff sack
  • Size
    Height (cm)
    Weight (g)
    Dimensions (cm)
    Packed Size (cm)
  • Short
    170
    235
    178 x 80
    18 x 10 x 10
  • Regular
    185
    255
    193 x 80
    18 x 10 x 10
  • Long
    198
    270
    206 x 80
    18 x 10 x 10
Sizing Information
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