Zip Top

Reusable Platinum Silicone Bags (Full Set of 8)

Plasticproof Great $$$Our price tier

One-piece platinum silicone bags that stand up and pinch shut, replacing single-use plastic bags. Silicone is not plastic film — there is no zipper strip, no liner and no plasticizer.

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One piece of siliconeNo zipper track, no seam.

Stands up to fillWhy it gets used, not stored.

Freezer to microwaveFood never changes container.

See exactly how we verify this

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Why it's safe for your family

They are moulded in one piece from platinum-cured silicone, so there is no plastic zipper track, no glued seam and no separate liner. A one-piece bag also has nowhere for food to hide, which is the failure of reusable bags with a zip.
Silicone is a silicon-oxygen elastomer, not a petroleum plastic film. It contains no plasticizers to migrate out, which is why it is the standard material for baby bottle nipples and medical tubing.
They stand up on their own, which sounds cosmetic and is the actual reason a reusable bag gets used: you can fill one with one hand and it does not tip over into the sink.
They handle freezer, microwave and dishwasher, so a bag can go from batch cooking to freezing to reheating without the food ever moving into a different container.

Is this really plastic-free? Yes — and here’s why

Plastic bags are polyethylene film with a plastic zipper. These are moulded silicone — a silicon-oxygen elastomer with no plasticizers, cured with a platinum catalyst rather than a peroxide one. Different material family, different behavior with heat and fat.

Platinum-cured silicone100%

What these are made of: one moulded piece of silicone. No film, no zipper strip, no liner.

Quick specs

Material

Platinum-cured silicone, one piece

Closure

Pinch-shut top — no plastic zipper track

Use

Freezer, microwave, dishwasher

Set

8 bags in mixed sizes

What to avoid instead

Avoid single-use plastic bags for anything oily, hot or long-stored — hot leftovers straight into a thin plastic bag is the everyday version of the exposure. Be aware of the trade: silicone bags are bulkier than a box of plastic bags and cost far more up front, and they only pay off if they actually get used.

How we verify — and what we don't

Straight answer: we're a research team, not a testing lab. Here's exactly what our rating is based on — and what it isn't — so you can weigh it honestly.

What we check

What the product is made of, from the maker's own specs and product listing.
Whether any part that touches you or your food uses PTFE, PFAS, plastic, or a coating that can degrade.
Peer-reviewed research on how that material behaves when heated, scratched, washed, or worn.
Known failure modes — how the product actually breaks down in a real home.

What we don't do

We have not chemically tested this specific unit in a lab.
We don't take payment to rate a product higher — there is no sponsored placement.
We don't show star ratings or "trusted by thousands" counts we can't stand behind.

What gets a product rejected

Anything that adds a known microplastic, PFAS, or off-gassing source — a non-stick coating, a plastic surface against food or skin, vinyl/PVC — is downgraded or cut. We only list what clears that bar.

Don't take our word for it — check the sources yourself Zip Top's product details

Common questions

Is silicone actually safer than plastic?

For food contact, the evidence is meaningfully better: platinum-cured silicone is stable, contains no plasticizers, and does not need the additives that make plastic film flexible. It is not inert like glass — at very high heat with fatty foods, silicone can release trace siloxanes — which is why we would still store hot oily food in glass and use silicone for the jobs glass cannot do.

Do they leak?

The pinch-shut top seals well for solids and semi-liquids and is not a substitute for a screw-lid container carried sideways in a bag. Standing upright in a fridge or freezer, they hold.

How do you get them dry inside?

That is the real annoyance with any reusable bag. Wash them open, stand them upside down over a bottle drying rack or a wooden spoon, and let air do it. Trapped moisture is what makes a reusable bag smell.