Based on this product's specifications, here are some alternatives and similar models
Circular Polarizing Filter B+W T-Pro KSM HTC CPL MRC nano 37mm
Summary description:
Circular polarizing (CPL) filter B+W T-Pro KSM HTC CPL MRC nano in 37mm size. Designed to reduce reflections and glare, enhance color saturation and contrast, and improve sky rendering for photography. Features multi-resistant coating (MRC) and nano coating for easier cleaning and moisture resistance. Suited for landscape, outdoor, and product photography using lenses with 37mm front thread.