Serious Mass by Optimum Nutrition

Marsoni

M251S

$149.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Serious Mass by Optimum NutritionOptimum Nutrition Serious Mass: the ULTIMATE in weight gain formulas. Optimum Nutrition Serious Mass supplies you with the tools you need to pack on the pounds and develop the physique you've always wanted. Super high in carbohydrates and Calories Optimum Nutrition Serious Mass is designed to help trainers with fast metabolisms obtain the calories they need to gain weight. 1,250 Calories per serve. 50g of blended protein. Over 250g of Carbohydrates

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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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Ordered this because my husband has ordered tank tops from this company so I had something for reference, but this ran true to size and fit my husband great. He’s a size L. The shirt had like a dry fit feel to it. It was breathable and was pretty wrinkle resistant. We’ve washed and dried it a few times and it doesn’t get crazy wrinkles. It’s not too thick so it’s great for an occasion during warmer weather. There was a huge variety of different styles of shirts. For the price it’s great.

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Reviewed in the United States on March 5, 2026

Verified Purchase

Lynn

Natrona Heights, US

★★★★★ 3

Stubborn Wrinkles

Color: Black, Size: XX-Large

The shirt came vacuum sealed. After two washings the wrinkles are still there. Beautiful shirt but not wearable yet. I'll try steaming it! It fits well.

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Reviewed in the United States on May 2, 2026

Verified Purchase

Cam L.

Phoenix, US

★★★★★ 5

Good fit

Color: Classic Blue, Size: X-Large

Soft and good color.

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Reviewed in the United States on May 6, 2026