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Optimum Nutrition Serious Mass Protein Powder Chocolate 2.73kg

Marsoni M251S
Sale price$64.40
Pay 4 payments of $16.10 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Optimum Nutrition Serious Mass Protein Powder Chocolate 2.73kgSerious weight gain requires serious calories. However, those who need the extra calories most often have the toughest time consuming enough of them. For many aspiring to be bigger, a highly active metabolism, weaker appetite and on the run lifestyle can make it a real challenge to consume enough calories through whole foods alone. Serious Mass is the ultimate in weight gain formulas. With 1,262 calories per serving to boost daily calorie intake, 50 g
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  • We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 720 reviews
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Product Reviews
G
Verified Purchase
Gus
Chelsea, US
★★★★★ 5
Works as designed
Style: Standard Filter
Works as designed. No issues or defects.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
C
Verified Purchase
CWORL
Grantham, US
★★★★★ 4
works well for camping
Style: Standard Filter
I’ve used this filter on my camper for years without issues, so I installed one in my outdoor kitchen at home. It was connected to a hose bib and left under constant pressure, feeding a small electric water heater for a sink. That turned out to be a mistake. Overnight, the top of the filter housing cracked and leaked water throughout the cabinet. No idea how long it was spraying. This filter works fine for intermittent use (like camping), but it does not appear to be designed for continuous pressure. I would not recommend installing it in a permanent, always-pressurized setup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
J
Verified Purchase
Justme.
Port Orchard, US
★★★★★ 5
Perfect, fits, nice to just have them sent to us.
Style: Standard Filter
Fits the bill. Clean water is so important and we enjoy the ease of having these sent right to us as we don’t live close to physical stores. They’re easy to install and the price is right!
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Reviewed in the United States on May 23, 2026
J
Verified Purchase
Jay M.
Draper, US
★★★★★ 5
Easy to install
Style: Standard Filter
Works great in RV
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Reviewed in the United States on May 24, 2026
K
Verified Purchase
Kyle
Omaha, US
★★★★★ 5
Nice hose filter for filling hot tubs
Style: Standard Filter
I bought this for filling up my hot tub. It does the trick. Straight tap water was difficult to balance the ph and keep it stable. When I fill the hot tub using the filter, the water is more balanced and easier to maintain. I used it for two 390gal refills before I noticed it was getting slower, so ordered another one. I haven’t used it for drinking water so can’t comment on the taste. It does seem to help with hardness though.
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Reviewed in the United States on May 3, 2026

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