Technobutter 4 (TB4) Firewall utilizes the recycled graphene fibers in a light and soft thermal layer to create a fire hot feedback loop. As the body heat warms the graphene fibers, they conduct the heat back into the body.

Available in the women's Hyperfreak Fire, Psycho Tech, & Blueprint.

Technobutter 4 (TB4) Air-Firewall is the next great thermal breakthrough made better with trapped pockets of air. It uses a special lamination process paired with a core of aerated neoprene and a graphene fiber jersey to create the toastiest conditions.

Available in the women's Hyperfreak Fire, Psycho Tech, & Blueprint.