The Premium cap is a three layer net-mesh and the cap of the Plus version is made of 100% Indian manta cotton. This provides breathability while still being strong and durable.
The Dual Band chin strap uses 6 materials plus Velcro and is an assembly of 24 different pieces. All six materials and the full cap design are necessary to provide the vertical lift and compound elastic-non elastic pressure functionalities and also be comfortable. The elastic and non-elastic straps produce a compound force curve that allows the pressure to be minimized. For the cap to be durable yet also light and breathable, it has the three-layer net-mesh construction. Since a full cap is required to balance the vertical forces at the front, and because it needs to fit heads of various sizes and shapes, the cap is constructed of three panels and has a rear size-adjustment strap. Because the cap and a portion of the Velcro (which is a somewhat stiff material) covers the ears, there is an interior soft grey felt lining to make that comfortable. And to provide comfort for wear over months or years, the entire perimeter of the cap is also lined.