Sea To Summit Reactor Lightweight Sleeping Bag Liner (Regular Size) - Grey

Optimised for minimal weight and maximum warmth, the Reactor Lightweight Liner  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 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:

• Best Use: Backpacking, Cycle touring, Paddle touring

• 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 fabric 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

• Comes with handy storage sack

Product Details:

Series: Sea to Summit : Reactor Sleep Liner
Manufacturer Colour: Grey
Primary Material: 100% Post-Consumer Recycled Polyester
Weight: 0.255 kg
Length: 193 cm
Width: 80 cm
Fits up to Height: 185 cm
Packed Dimensions: 10 x 18 x 10 cm
Size: Regular

Fast Dispatch:
Orders placed before midday (Melbourne time, Mon–Fri) are dispatched same day, provided no pre-order items are included.

Free Shipping:
Orders over $99 can select free Economy shipping Australia wide at checkout.

For bulky orders shipped to Regional or Remote locations we will still partially subsidise the shipping cost for you, however the balance of the shipping fee will be calculated based on the cubic volume of the parcel.

To estimate shipping, add items to cart and enter your postcode at checkout.

Delivery Times:
Economy, Standard and Express options are available at checkout.

Delivery times vary by service and postcode, ranging from overnight in metro areas to over a week for remote locations.

For detailed estimates, refer to our shipping page below.

All Shipping FAQ's

We want you to be thrilled with your purchase!

For your peace of mind, we have a 30 day change of mind policy. (Some exclusions apply to personal items, for hygiene reasons)

For full details, please view our Return FAQ's.