Stainless Steel or Plastic? It Depends on Your Everyday Life

Stainless steel or plastic? It depends on your everyday life

There is an answer to this question – but it's not necessarily the one you'd expect. Neither stainless steel nor plastic is inherently better. It depends on where, how often, and by whom the cup is used.

What speaks in favor of stainless steel

Stainless steel is durable. A good stainless steel cup survives years, falls off the table, the daycare backpack, and the dishwasher – without scratches, cracks, or discoloration. That makes it the more affordable choice in the long run, even if the upfront price is higher.

Stainless steel doesn't absorb odors. That's a big advantage with milk, juice, or hot cocoa. Plastic cups that are in contact with milk for long periods eventually smell sour – no matter how well you wash them.

And stainless steel contains no plasticizers, no BPA, and no substances that can leach out over time – a point that matters to many parents.

What can speak against stainless steel

Weight. Stainless steel cups are heavier than plastic ones. For children under two, that can be a real problem – a full cup that a child can't hold well ends up on the floor.

Price. High-quality stainless steel cups cost more. That's an investment that pays off – but not every cup on the stainless steel shelf is actually high quality. Pay attention to wall thickness and build quality.

And: you can't see through it. That sounds minor – but if you're teaching a child how much is left in the cup, or want to check if the contents have changed, that's a small but real downside.

What speaks in favor of plastic

Plastic is light. For the very youngest children, that's genuinely an argument. A cup a two-year-old can lift and hold without trouble actually gets used.

Plastic is cheaper. If a cup gets lost or broken – which happens regularly with toddlers – the loss stings less.

And transparent plastic makes it easy to see how much is left.

What can speak against plastic

The material question. Not all plastic cups are the same. Cheap plastic can contain plasticizers, becomes porous after just a few dishwasher cycles, and then absorbs odors and bacteria. BPA-free is a necessary baseline – but not a quality mark in itself.

Durability. Most plastic cups last one to two years with regular use. Cracks, scratches, discoloration – that's normal, but it means: you buy more often.

The honest recommendation

For children from around age three who need a cup for daycare or on the go: stainless steel pays off. It lasts, it doesn't smell, it doesn't rust.

For toddlers under two who are still learning to drink on their own: a good, BPA-free plastic cup isn't a compromise – it's the more sensible choice.

And at home, at the table? There, the material often matters least. What counts is what the child actually likes to use.

At KiNDKiT you'll find stainless steel cups selected by exactly these criteria – durable, odor-neutral, and simple enough to just work.