The Sea To Summit Reactor Sleeping Bag Liner with classic mummy shape keeps you warm during cool to cold weather camping - making the difference between a restless night’s sleep and a comfortable night’s sleep. 

Advanced Thermolite Pro fabric ensures this sleeping bag liner uses an adventure-worthy formula of knitted hollow-core fibres that capture air for toasty warmth, and infra red-absorbing ceramic pigments to boost thermal effectiveness. It ensures that your own body heat works in your favour on chilly nights, reflecting it back to you.

Stay cocooned in comfort with the mummy shape and stretch-knit fabric, allowing you to find the perfect sleeping position for you. The bio-based HeiQ Fresh odour control technology ensures you stay in a comfortable, healthy sleep environment.

The convenient openings at the shoulders give you freedom to move your arms naturally - whether you’re stretching during the night or hugging a warm mug before bedtime. When you feel a chill in the air, this sleeping bag liner is a camping essential to stay cosy and comfortable. 

Please note: This model features a classic mummy shape without a foot drawcord or snap closure at the shoulders.

Key Features:

• Cool To Cold Weather Adaptability: Ideal for taking the edge off the cold, helping boost the temperature in your sleeping bag by a few degrees. 
• Mummy Shape: Accommodates campers up to 198cm in height, providing freedom of movement without the bulk. 
• Thermolite Pro Fabric: Captures insulating air using hollow-core fibres while maintaining a soft, stretchy feel.
• Infra Red-Absorbing Ceramic Pigments: Provide a genuine thermal boost by reflecting back your body warmth.
• Thermolite EcoMade Fibres: Crafted from 100% recycled materials derived from textile waste - providing lightweight, cosy comfort and warmth while reducing environmental impacts.
• Stretch-knit Fabric: Allows you to sleep with total freedom. 
• Openings At Shoulders: Keeps your arms free for practicality and comfort. 
• Compatible With Sleeping Bags Of All Shapes: The sleeping bag liner’s shape and stretch fabric makes it versatile to pair with your current sleep system.
• HeiQ Fresh Odour Control Technology: Built-in odour management for fresh-feeling sleeping conditions even during multi-day camping adventures. 
• Easy To Wash: Can be machine washed to enjoy more time in the great outdoors. Avoid fabric softeners as they can reduce the effectiveness of the wicking properties.