Knee Guard ReaFlex UltraLite

Size down they were a bit big

Leatt’s Reaflex range is a prime example of the brand’s goal. The pads are light enough that they can overcome objections to wearing pads while also providing CE-level certification
https://cyclingmagazine.ca/mtb/leatt-airflex/

The Reaflex Ultra Lite is a superb blend of super-lightweight materials and CE-certified impact protection. Engineered to help achieve maximum pedal efficiency, the longer leg sock provides support to the thigh region whilst alleviating pressure on the calf. Constructed from premium mesh to provide ventilation, the impact gel pad on the Ultra Lite fits neatly into a mesh pocket to hold it in place, with an abrasion-resistant patch over the knee. https://theloamwolf.com/2023/02/09/leatt-releases-two-new-airflex-knee-guards/

Leatt has engineered the ReaFlex knee guards for maximum pedal efficiency and comfort and they feature an ergonomic fit with the ReaFlex gel pad and come with uncompromised CE-certified impact protection. As the Ultralite in the name suggests, these pads boast an ultra-lightweight construction: the silicone grip panels made it possible to delete the thigh strap and still keep that famous Leatt non-slip fit. The extended leg sock should offer great support high on the thigh.

https://off.road.cc/content/feature/body-protection-from-leatt-and-g-form-and-some-goodies-from-easton-11979