Choose the Freewell Insta360 Luna Ultra ND/PL Filter if you use Luna Ultra and want reducing glare from water, glass, roads, snow, and bright skies. It is a good fit for creators who already know the look or shooting problem they are trying to solve, rather than shoppers who simply need a full starter kit.
This is a focused accessory, so it works best when matched to the right scene. Use it when the product name matches your camera model and the filter effect matches your goal. If you need a wider range of daylight options, consider a multi-filter kit instead.