Name: Sea to Summit Reactor Lightweight Liner
Brand: Sea To Summit
SKU: STSM.053203.501.LNG
Price: 99.0 NZD
Availability: InStock
Rating: 5.0 (1 reviews)

[data-product-photos] .product-main-slide [data-dw-media-src] { display: none !important; } Sea to Summit Reactor Lightweight Liner

1 12

Rated 5.0 out of 5

Based on 1 review

$99.00

Length

Short

Regular

Long

Quantity

NZ deliveryTarget 1–2 business days* 30-day returns Returns & exchanges Support & FAQs Delivery & warranty

Optimised for minimal weight and maximum warmth, the Reactor Lightweight enhances sleep system performance with advanced Thermolite® Pro fabric, which uses infrared-absorbing ceramic pigments and hollow-core fibres to trap body heat. Adding up to 4°C|7°F of warmth with minimal bulk, it’s ideal for ultralight expeditions. Stretch-knit fabric and articulated arm openings ensure unrestricted mobility. Treated with HeiQ Fresh odour control, it’s quick-drying, machine washable, and helps prolong your sleeping bag’s lifespan by reducing wash frequency.

Features

Lightweight and insulative, Thermolite® Pro technology with hollow-core fibres and infrared-absorbing pigments enhances warmth with minimal pack size
Freedom to Move – Stretch-knit and shaped arm openings allow unrestricted movement, providing natural comfort throughout your sleep
Technical Shape and Hood – Ergonomic design with a fitted hood delivers optimal warmth and comfort without extra weight or bulk
Fits any sleeping bag - Stretch fabirc means the Reactor Liner fits any shape of sleeping bag
Stay Fresh Longer – HeiQ Fresh odour control technology keeps the liner fresh after extended use
Sleep System Integration – Snap connectors at the shoulders easily pair with Sea to Summit sleeping bags for quick, hassle-free entry and exit
Easy to Keep Clean – Machine washable construction simplifies care and reduces wear on your sleeping bag over time
Lower Impact Materials – Crafted with certified recycled fibres and bluesign APPROVED materials to minimise environmental impact

Tech specs

Best Use

Backpacking, Cycle touring, Paddle touring
Material(s)

100% Post-Consumer Recycled Polyester; Stuff Sack: 100% Polyester

Sea to Summit Reactor Lightweight Short liner dimensions

Sea to Summit Reactor Lightweight Regular liner dimensions

Sea to Summit Reactor Lightweight Long liner dimensions

	Short	Regular	Long
Weight	235g	255g	270g
Dimensions	178 x 80 cm	193 x 80 cm	206 x 80 cm
Packed Size	10 x 18 x 10 cm	10 x 18 x 10 cm	10 x 18 x 10 cm
Fits Up To Height	170 cm	185 cm	198 cm

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Frequently asked questions

Can I return or exchange my order?

Eligible items can be returned within 30 days of purchase, unused with original packaging and labels. There is no handling or restocking fee. Return postage is at your cost; conditions apply.

Returns policy

What if I need warranty or repair help?

Contact us before sending anything back, with your order details, photos and a brief description of the issue. We will help with warranty, repair or spare-part options. Coverage varies by product; your consumer rights still apply.

Get warranty help

How long will my order take to arrive?

Our target is 1–2 business days after dispatch for in-stock, standard parcels. Rural, remote and bulky deliveries can take longer. Preorders, public holidays and carrier delays may affect timing. Contact us if you need an item by a specific date.

Delivery information

How much does shipping cost?

Standard NZ shipping is $10, or free on orders over $150, excluding large items. Product-specific freight or remote-area surcharges may apply. Final shipping charges are shown at checkout.

Delivery information

Will I receive tracking details?

Yes, tracking details are sent by email when your order is dispatched. Allow time for the carrier’s first scan. If you cannot find the email, contact us with your order number.

Contact our team

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Reviewed by Mark C.

Verified Buyer

I recommend this product

Age Range

25 - 34

Do you recommend this product?

Yes

Rated 5 out of 5

Review posted

Great. Compact & warm.

It's a lovely lightweight liner that adds a lot of extra warmth and comfort in a very compact design.

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Sea to Summit Reactor Lightweight Liner

Features

Tech specs

Frequently asked questions

Great. Compact & warm.

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