Microplastics have been found in human blood, breast milk, and newborn lungs. We are doing something about it.See the research →
Reusable Silicone Storage Bags
Kitchen·Stasher

Reusable Silicone Storage Bags

A
PFR Grade
Excellent — minimal plastic, transparent materials, safe for daily use
Platinum silicone — no BPA, no phthalates, no microplastic shedding.
PFR Approved

100% pure platinum silicone bags that replace single-use plastic zip bags entirely. Dishwasher-safe, freezer-safe, and oven-safe up to 400°F.

Score Breakdown
Materials
10
Packaging
9
Transparency
10
Durability
10

Brands cannot pay for higher scores. If you buy through our link, we may earn a small commission at no extra cost to you.

Moderate Exposure Risk — Why This Product Category Matters

Plastic zip bags are in direct contact with your food every day. Standard LDPE/LLDPE bags leach plasticizer additives into food — especially fatty foods like cheese, meat, and avocado. The longer food sits in plastic, the more it absorbs.

Why We Recommend This Product

Stasher uses platinum-grade silicone — the safest synthetic polymer for food contact. No BPA, BPS, phthalates, or fillers. Packaging is 100% plastic-free cardboard.

Chemical & Health Analysis

Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.

Replaces:Platinum silicone (polydimethylsiloxane) — food-safe grade
1

Platinum silicone

Source

The bag itself

Health Risk

Considered the safest synthetic polymer for food contact. Does not leach BPA, phthalates, or known endocrine disruptors. Inert at temperatures up to 400°F.

Who Is Most At RiskNo known risk at this grade of silicone.
2

LDPE / LLDPE additives (in conventional bags)

Source

Standard plastic zip bags this product replaces

Health Risk

Low-density polyethylene releases trace plasticizers and antioxidant additives into food, particularly fatty foods. Cumulative daily exposure contributes to microplastic body burden.

Who Is Most At RiskEveryone — especially children and pregnant women who eat packaged food daily.

All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.