About Us

Smarter Living. Sustainable Design. Everyday Kinzt.

Kinzt was created with a simple goal: to redefine how we live, carry, and consume without compromising on style, function or the planet.
From smart bottles to stainless steel lunch boxes, we design products that do more, last longer and waste less.

We believe that the best products aren’t just beautiful they’re responsible. That’s why every Kinzt item is reusable, made with food-grade stainless steel and built for daily life on the go.

We're not just selling containers. We're building a lifestyle where sustainability feels effortless and even exciting.

đŸŒ± Our Mission

To Make Reusables the New Normal

At Kinzt, our mission is to inspire conscious choices through smart design. We aim to eliminate single-use waste by creating products people want to use every day at home, at work, at school and on the move.

We are committed to:

  • Designing premium, durable alternatives to plastic.
  • Reducing environmental impact at every stage from materials to packaging.
  • Encouraging a global shift toward mindful consumption.

We don’t believe in perfect sustainability. We believe in real, repeatable change and that starts with one bottle, one box, one choice at a time.

 

Product Use & Features

How long does the tumbler keep drinks hot or cold?

Our tumblers keep beverages hot for up to 6 hours and cold for up to 12 hours, Iced up to 24 hours. Thanks to double-wall vacuum insulation.

Can I use it for hot and cold drinks?

Yes! Our tumblers are designed for both hot coffee or tea and ice-cold drinks.

Can I put carbonated drinks in the tumbler?

Yes, but it's not recommended. If you must, open carefully to avoid pressure build-up.

Will it fit in a standard car cup holder?

Yes, our tumblers are designed to fit most car cup holders comfortably.

Materials & Safety

What materials are used in the tumbler?

We use high-quality 304 food-grade stainless steel and BPA-free plastic lids.

Is the tumbler BPA-free?

Yes, all plastic components are BPA-free for your safety.

Does it leave a metallic taste?

No. The stainless steel is taste-neutral and does not alter the flavor of your drinks.

Can I fill the Kinzt Thermal Tumbler with boiling water (100°C)?

Yes, you can fill the Kinzt Thermal Tumbler with boiling water. However, for your safety, we strongly recommendopening the straw cover briefly after fillingto release any built-up hot air pressure. This step helpsprevent the lid from unexpectedly popping or bouncingdue to steam buildup. Additionally, avoid using the straw when drinking hot liquids to reduce the risk of burns. Always handle the tumbler with care when filled with hot beverages.

Cleaning & Maintenance

 Is it dishwasher safe?

The tumbler body is best hand-washed to preserve insulation. Lids can be placed on the top rack of the dishwasher.

How do I remove coffee or tea stains?

Use a mix of baking soda and warm water or a bit of vinegar for natural, effective cleaning.

Can I put it in the freezer or microwave?

No. Doing so may damage the insulation or materials.

Lid & Accessories

 Is the lid leak-proof?

Our lids are spill-resistant but not 100% leak-proof. G and Y Lids are 100% leak-proof. H Lid is not leak-proof. Always keep upright when traveling with H Lid.

Can I order replacement lids or straws?

Yes! Contact our support or visit the Accessories section of our store.

Orders, Shipping & Returns

How do I place an order ?

Select your tumble, add to cart and complete checkout with your shipping and payment details. Check your email for order confirmation.

Can I return or exchange my tumbler?

Yes. We offer a 14-day return policy for unused items. See our Returns page for full details.Return Policy

How long does shipping take?

We typically ship within 1–2 business days. Delivery time varies by region (usually 3–5 business days within the EU). See our Shipping page for full details.Shipping Policy