As a developer you probably give demonstration a lot. Most developers use VR covers to keep their VR headsets clean and hygienic. VR Cover released a new set of VR Covers that perfectly fit the HTC Vive Pre. It is available at a price of $ 19.00, the same price as the other covers.
The HTC Vive Pre VR Cover set contains two HTC Vive VR Covers and a small carrying pouch.