Smartshake Reforce Steel vs Plastic Shakers: Which Lasts Longer?

Quick answer

The Smartshake Reforce Steel Shaker (900ml) is built to outlast typical plastic shakers. Its food-grade stainless steel body resists cracking, staining, and odor absorption, and it is designed to be 100% leak-proof. Plastic shakers are lighter and cheaper, but they scratch, warp, and lose their seal over time. If you want one shaker that survives daily gym use for years, steel is the more durable choice.

What makes steel shakers last longer than plastic?

The main difference is material behavior. Plastic shakers are usually made from polypropylene or Tritan. They are lightweight and impact-resistant, but they scratch easily, can absorb odors from protein and pre-workout, and may warp if left in a hot car. Over time, scratches create places for bacteria to hide, and the lid threads can wear down, causing leaks. Stainless steel, like the food-grade steel used in the Smartshake Reforce Steel Shaker, does not absorb odors or stain. It resists dents and cracks under normal gym use, and it holds its shape, so the lid seal stays tight. The trade-off is weight: steel is heavier, and you cannot see through it to check your mix.

Leak proofing: steel vs plastic

Leaks usually start at the lid, not the bottle body. Plastic shakers rely on a thin gasket and flexible threads. If the plastic threads strip or the gasket dries out, the shaker drips. The Smartshake Reforce Steel Shaker is designed to be 100% leak-proof, with a robust lid and a steel body that does not flex. That combination keeps the seal under pressure. However, no shaker is completely leak-proof if you overtighten the lid or damage the gasket. For plastic shakers, check the gasket regularly and replace it if it becomes brittle. With steel, the weak point is still the gasket, but the rigid body helps it last longer.

Capacity and mixing: 900ml vs standard plastic shakers

The Smartshake Reforce Steel Shaker holds 900ml, which is larger than many standard plastic shakers (often 600–700ml). That extra room matters if you use weight gainers like Serious Mass, which requires a large serving size. A 900ml shaker gives you space to add milk, ice, or fruit without overflowing. Plastic shakers in the same size exist, but they may feel less stable when full because the plastic walls flex. Steel stays rigid, so the shaker feels solid even when packed. The downside: a full 900ml steel shaker is heavy, and you cannot squeeze it to mix. You need a shaker ball or a few ice cubes to break up clumps.

Cleaning and maintenance: what to expect

Steel shakers are generally easier to keep fresh. The Smartshake Reforce Steel Shaker has a powder-coated finish that resists scratches and is easy to rinse. It does not hold onto smells the way plastic can. However, you should still wash it by hand with warm soapy water and let it air dry. Plastic shakers can go in the dishwasher more often, but high heat can warp them over time. If you use your shaker multiple times a day, steel saves you from replacing a smelly plastic bottle every few months. The trade-off is that steel is not microwave-safe and can get hot if left in the sun.

Cost over time: which is the better value?

A plastic shaker might cost less upfront, but if you replace it every 6–12 months due to cracks, leaks, or odor, the cost adds up. The Smartshake Reforce Steel Shaker is priced at USD 12.95 (catalog comparison price USD 17.99), which is competitive with many plastic shakers and often cheaper than premium plastic options. Because it is built to last, you may not need to buy another shaker for years. That makes it a better long-term value if you train consistently. If you only use a shaker occasionally, a cheap plastic one may be sufficient. But for daily gym-goers, steel is the more economical choice.

Trade-offs at a glance

• Smartshake Reforce Steel Shaker: Durable stainless steel body, 900ml capacity, 100% leak-proof design. Heavier than plastic and not see-through. Best for daily gym use and large shakes; expect it to last for years.
• Typical plastic shaker: Lightweight, cheap, often see-through. Can crack, scratch, absorb odors, and lose its seal over time. Fine for occasional use, but likely needs replacing within a year.
• Leak-proofing: Steel body does not flex, so the lid seal stays tight. Plastic threads can strip and gaskets wear out. If you carry your shaker in a bag, steel is the safer bet.

Product facts

• Optimum Nutrition Smartshake Reforce Steel Shaker - 900ml: The Smartshake Reforce Steel Shaker (900ml) is a durable, high-quality shaker designed in collaboration with SMARTSHAKE to provide a rugged, 100% leak-proof solution for mixing supplements. It has a 900ml capacity and a food-grade stainless steel body that is powder-coated. The 900ml capacity fits large servings like weight gainers, and the steel body resists cracks, stains, and odors better than plastic. The 100% leak-proof design means you can carry it in a gym bag without worrying about spills.
• Serious Mass Weight Gainer Protein Powder: Serious Mass is a high-calorie weight gain formula that provides 1,250 calories, 50 grams of protein, over 250 grams of carbohydrates, and 3 grams of added creatine per serving. A single serving is large and requires a big shaker. The 900ml Smartshake Reforce Steel Shaker gives you enough room to mix a full serving without overflow, unlike smaller plastic shakers.

Which shaker should you choose?

Choose the Smartshake Reforce Steel Shaker if:

• You train daily and want one shaker that lasts for years.
• You mix large servings like Serious Mass or use a 900ml capacity.
• You need a leak-proof shaker for commuting or travel.
• You dislike plastic aftertaste or odor buildup.

Choose a plastic shaker if:

• You want the lightest possible bottle for running or cycling.
• You prefer a see-through shaker to check your mix.
• You only use a shaker a few times a month and want the lowest upfront cost.