This review is for a pack of polarised ND filters for DJI Mini 5 Pro, branded K&F CONCEPT, priced at £42.99In the pack are ND4 CPL, ND8 CPL, ND16 CPL, ND32 CPL. ND64 CPL and a plain CPL, all supplied in a plastic carry case that is far larger than it needs to be, sadly.The filters themselves clip on in the same way as the official DJI filters, and are a solid fit and unlike to come off mid flight. Being CPL, you need to align the dot on the filter ring to an arrow on the mount for landscape. For Portrait, you need this to be 90 degrees off. The dot on the ring isn't the easiest to see, and the manufacturer should make this clearer in my opinion. Fortunately, it doesn't move on its own, so should be just a case of double checking you haven't knocked it when handling.I recently took my Mini 5 Pro on holiday, and struggled with glare off the sea, so was looking for some CPL filters, so was delighted these were available to review. K&F CONCEPT is not a brand I've heard of before, but in initial testing, they seem to be very good.As ND filters, they work well, though only been able to test the ND4 and ND8, due to dull conditions. They allow a much slower shutter for more cinematic footage.So far, due to ongoing dull weather here in the UK, I've not been able to fully test the anti-glare functionality of the CPLs, but will update when I get the opportunity to fly in bright weather over water.I measured them as just over 1g, which may push your Mini 5 Pro over 250g, if that's an issue in your region. They weight quite similar to the official DJI ones.