★★★★★ 5
Fav socks
My favorite socks! Love them!
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Reviewed in the United States on April 20, 2026
![Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]](https://cdn.shopify.com/s/files/1/0633/1623/0209/files/954781.jpg?v=1773089768 "Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]")
![Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]](https://cdn.shopify.com/s/files/1/0633/1623/0209/files/954782.jpg?v=1773089768 "Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]")
![Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]](https://cdn.shopify.com/s/files/1/0633/1623/0209/files/954783.jpg?v=1773089768 "Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]")
Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack]Replacement filter cartridge for Hayward SwimClear, Super StarClear swimming pool filter systems. Compatible Filter Systems Hayward SwimClear (C2020, C3020, C4020, C5020, C7020) Hayward Super StarClear (C2000, C3000, C4000, C5000) Specifications Type Filter Cartridge Filtration Area 131 sq ft Outside Top (OT) 3" Outside Bottom (OB) 3" Diameter 7" Length 32 7 8" Media Weight 4 oz Pack Quantity 4 MPN FC 6435 Brand Compatibility Hayward Cross References
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Your Hayward SwimClear / Super StarClear Replacement Cartridge - 131 Sq Ft (FC-6435) [4-Pack] orders ship within 1-2 business days.
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- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 802 reviews
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Product Reviews
★★★★★ 4
Not bulky fit
Size: Large, Color: (009) Gray Dawn / White / Prime Pink
Thinner than UA other cushioning run socks, but this fit is perfect and doesn't shift in my shoe. I wear a women's 9.5 and determined Large doesn't squeeze my foot like Medium size (too exact). Bonus... avaliable olors beyond black and Grey.
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Reviewed in the United States on October 2, 2025
★★★★★ 5
Comfortable
These are very comfortable to wear
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Love these socks!
The wife struggles with socks. She only like the Nike ones, then they discontinued them, so had to start the search again! Found these, they are expensive just like the Nike, but the size is true, they look great, they are super soft and stretchy. They are light weight and breathable and seem to wick away moisture. She loves these!
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Comfy
Number of Items: 6, Color: Black (6-pairs), Size: Large
Comfy and well made
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
