One Hundred Concepts Thermal Cap RH25 Black. When doffed they have a lower profile than traditional flip-style caps. We know these devices are a significant investment so being able to protect them is crucial. ThermalCap does this and more. Specifications for One Hundred Concepts Thermal Cap: Manufacturer: One Hundred Concepts Color: Black Features of One Hundred Concepts Thermal Cap Front and Rear Caps for the iRay RH25 Package Contents: One Hundred Concepts Thermal Cap One Hundred Concepts OHC-TC-RH25: Thermal Cap RH25 Black