I have a black one from this brand, but they do make them in white as well.
KAUAI - Silicone Wedding Rings for Men Timeless Elegance Ring Collection. Leading Brand, from Leading Brand, from The Latest Artist Design Innovations to Leading-Edge Comfort https://www.amazon.com/dp/B08PVZL68C/ref=cm_sw_r_cp_api_glt_fabc_DJNA2W0PNH9HVQNHYGWM?psc=1