Nikwax Hydrophobic Down (NHD) technology is the world's best water repellent down fill! It is up to 250 times more water resistant than standard down, while retaining its natural insulating properties even in wet conditions.

SynergyLink™ Connectors are attachment straps that connect the sleeping bag to the sleeping mat, ensuring that the user remains on the mat throughout the night. This significantly reduces the risk of slipping off the mat while sleeping and losing its insulation.

The Toe-asis™ Foot Warmer Pocket is a special insulation pocket that quickly warms cold feet. It is sewn into the ergonomic end of the Therm-a-Rest brand sleeping bag to keep you comfortable and warm while you sleep.

The use of Zoned Insulation involves concentrating the fill at the top and sides of the sleeping bag, where its full volume best retains heat. This technique works in tandem with the karimata, which provides most of the insulation on the underside, helping to increase warmth while reducing unnecessary weight.

Mesh box baffles is a method of filling down sleeping bags and blankets that uses vertical walls to distribute the down evenly. This advanced design prevents cold spots and compression, a common problem in simpler sew through systems.

W.A.R.M. Fit is a system designed for sleeping mats that provides additional space for a variety of natural sleeping positions while maintaining thermal efficiency. With this solution, the user can comfortably change positions without losing heat. This technology combines comfort with functionality, performing perfectly in a variety of conditions.