I use these and really like them. Not too expensive.
proSPORT Polarized Bifocal Reading Sunglasses TAC Polarized Lenses for Men and Women. Smoke or BrownproSPORT Polarized Bifocal Reading Sunglasses TAC Polarized Lenses for Men and Women. Smoke or Brown
https://www.amazon.com/dp/B06Y42CMH7?psc=1&ref=ppx_yo2ov_dt_b_product_detail s