We have 4K versions available of our latest eVideos (Balance on Downhill Foot; Poles Across Knees; Tighten the Radius of Your Turns). These are the highest resolution videos we offer (3840x2160). They are great for watching on a big screen. The files are large, so before you purchase these versions, make sure that you have good internet bandwidth and connectivity, sufficient storage, and that your preferred viewing device is compatible with this resolution. Enjoy!!