The Sea to Summit Reactor Thermolite Pro sleeping bag liner is designed to enhance the warmth and comfort of your sleeping system in cool to cold weather. Used as a mid-layer, it significantly improves the thermal performance of your sleeping bag. Its stretch fabric adapts perfectly to all bag shapes for optimal comfort.
Main features
-
Thermal sleeping bag liner for cool to cold conditions
-
Compatible with all types of sleeping bags
-
Available in classic mummy style or with a foot cord
-
Designed for use in 3 seasons and more
-
Integrated odor-control technology
Materials
-
Thermolite® Pro
-
Knitted hollow fibers
-
Thermolite® EcoMade Fibers
-
Infrared-absorbing ceramic pigments
Strengths
✔️ Effective thermal insulation to extend the performance of the sleeping bag
✔️ Thermolite® Pro reflects body heat for added warmth and comfort
✔️ Shoulder openings on the mummy version for increased freedom of movement
✔️ Version with a drawstring at the foot offering ventilation and the possibility of walking around camp
✔️ HeiQ Fresh technology to limit odors during prolonged use
✔️ Stretch knit fabric for a soft and natural feel
✔️ Integrates perfectly with the Free-Flow Zip systems of select Sea to Summit bags
✔️ Sea to Summit lifetime warranty
Reactor Extreme Mummy Sleeping Bag Liner – Standard
The measurements presented are for guidance only.
How to choose the right size
User Height: Measure your full height, barefoot, in an upright position.
Usage: Choose the snuggest possible size to optimize comfort, insulation, and weight.
Sleeping Bag Sizes
| Size | Recommended User Height | Internal Bag Length |
|---|---|---|
| Short | Up to 170 cm | 185 cm |
| Regular | Up to 183 cm | 198 cm |
| Long | Up to 198 cm | 213 cm |
Sleeping Mat Dimensions
| Size | Length | Width |
|---|---|---|
| Short | 168 cm | 55 cm |
| Regular | 183 cm | 55 cm |
| Large | 198 cm | 64 cm |
| Rectangular Regular | 183 cm | 64 cm |
| Rectangular Large | 198 cm | 64 cm |
Sleeping Pads
| Size | Length (cm) | Width (cm) |
|---|---|---|
| Short | 168 | 55 |
| Regular | 183 | 55 |
| Large | 198 | 64 |
| Rectangular Regular | 183 | 64 |
| Rectangular Large | 198 | 64 |
Sleeping Pad Thicknesses
| Range | Thickness (cm) | Comfort | Recommended Use |
|---|---|---|---|
| Ultralight | 5 | Minimal | Ultralight, fastpacking, fast hiking |
| Camp / Lightweight | 5 – 7.5 | Good | Hiking, trekking |
| Ether Light | 10 | Very High | Camping, comfortable trek, side sleepers |
| Comfort Plus | 6.3 (double layer) | High + Safety | Camping, expeditions, air redundancy |
| Comfort Deluxe | 10 | Maximum | Camping, van life, comfort prioritized |
| Self-Inflating | 3.8 – 7.5 | Variable | Camping, versatile use |
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
The Sea to Summit Reactor Thermolite Pro sleeping bag liner is designed to enhance the warmth and comfort of your sleeping system in cool to cold weather. Used as a mid-layer, it significantly improves the thermal performance of your sleeping bag. Its stretch fabric adapts perfectly to all bag shapes for optimal comfort.
Main features
-
Thermal sleeping bag liner for cool to cold conditions
-
Compatible with all types of sleeping bags
-
Available in classic mummy style or with a foot cord
-
Designed for use in 3 seasons and more
-
Integrated odor-control technology
Materials
-
Thermolite® Pro
-
Knitted hollow fibers
-
Thermolite® EcoMade Fibers
-
Infrared-absorbing ceramic pigments
Strengths
✔️ Effective thermal insulation to extend the performance of the sleeping bag
✔️ Thermolite® Pro reflects body heat for added warmth and comfort
✔️ Shoulder openings on the mummy version for increased freedom of movement
✔️ Version with a drawstring at the foot offering ventilation and the possibility of walking around camp
✔️ HeiQ Fresh technology to limit odors during prolonged use
✔️ Stretch knit fabric for a soft and natural feel
✔️ Integrates perfectly with the Free-Flow Zip systems of select Sea to Summit bags
✔️ Sea to Summit lifetime warranty
