https://www.amazon.com/Gorilla-Grip-Polycarbonate-Non-Breakable-Transparent/dp/B07S253MS8/ref=sxin_16?asc_contentid=amzn1.osa.9d6fa572-a7c3-4815-af63-a5d517ba9e4a.ATVPDKIKX0DER.en_US&asc_contenttype=article&ascsubtag=amzn1.osa.9d6fa572-a7c3-4815-af63-a5d517ba9e4a.ATVPDKIKX0DER.en_US&content-id=amzn1.sym.2501e731-e00e-46aa-97f8-28a8de3ef511%3Aamzn1.sym.2501e731-e00e-46aa-97f8-28a8de3ef511&creativeASIN=B07S4CSMH3&crid=O34FBNT1S3WK&cv_ct_cx=chair%2Bmat&cv_ct_id=amzn1.osa.9d6fa572-a7c3-4815-af63-a5d517ba9e4a.ATVPDKIKX0DER.en_US&cv_ct_pg=search&cv_ct_we=asin&cv_ct_wn=osp-single-source-pecos-desktop&keywords=chair%2Bmat&linkCode=oas&pd_rd_i=B07S4CSMH3&pd_rd_r=740b061e-39cc-48f6-bf61-7068f59a2685&pd_rd_w=gyC5b&pd_rd_wg=UJC9Q&pf_rd_p=2501e731-e00e-46aa-97f8-28a8de3ef511&pf_rd_r=2C2E6DQVRNM62X68WZBT&qid=1678630684&sbo=RZvfv%2F%2FHxDF%2BO5021pAnSA%3D%3D&sprefix=chair%2Bma%2Caps%2C147&sr=1-2-c26ac7f6-b43f-4741-a772-17cad7536576&tag=21oak-20&th=1

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I like the gorilla grip mats, they are thin, but rigid. they dont flex with the wheels so it should spread out the weight better.

edit: GD that's a hell of a link