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Technology Page - Thermo Ionic Lining Technology

Feb 20, 2024

What is Thermo Ionic Lining Technology?

Outdoor gear that is designed to keep you warm, and does so by trapping air near to your skin, this air is warmed by heat radiating from your body creating a warm layer of air around you. The majority of the heat from your body is lost to the atmosphere, Rab has been looking at how to capture more of that energy without having a weight penalty on their sleeping bags.

Rab's new fabric, TILT (Thermo Ionic Lining Technology), is used in the inner lining of their top-of-the-line sleeping bags, sleeping mats and down jackets. This technology reflects heat back toward the body, reducing radiative heat loss and increasing warmth. It significantly improves the warmth-to-weight ratio without altering the fabric's original properties or adding weight. At Ultralight Outdoor Gear, we prioritize this balance - enhancing the insulating capabilities of gear without increasing its weight. Improvements like these earn our enthusiastic endorsement.


Rab's new fabric, TILT (Thermo Ionic Lining Technology), is used in the inner lining of their top-of-the-line sleeping bags, sleeping mats and down jackets. This technology reflects heat back toward the body, reducing radiative heat loss and increasing warmth. It significantly improves the warmth-to-weight ratio without altering the fabric's original properties or adding weight. At Ultralight Outdoor Gear, we prioritize this balance - enhancing the insulating capabilities of gear without increasing its weight. Improvements like these earn our enthusiastic endorsement.