I have knee protectors from the DIY/builders shop (bought to lay a floor/tiles) and a handy foam mat 30 x 30 cm for gardening (a gift). For cleaning the coop floor and gardening I usually use the foam mat. But they both work great for my fragile knees.I know I said I liked picking greens, but I should have mentioned that if I am not regular and don't do it every two days, it can become tedious as it takes more than 45 mn staying on my knees.
A link to the the mat I have: Choose weigeren if you don’t like cookies: https://www.toolstation.nl/tuinknie...MI25ig_-upgAMV3paDBx1pdgDVEAQYBiABEgKVaPD_BwE