Is the lunch box really leak-proof?

Yes! Our stainless steel lunch box is 100% leak-proof — even with liquids like sauces or yogurt. A secure silicone seal ensures no spills in your bag.

Is it dishwasher safe?

The stainless steel base is dishwasher safe. We recommend hand-washing the lid to preserve the silicone seal and ensure long-term durability.

Can I personalize the lunch box?

Absolutely! You can add a custom engraving — perfect for gifts, kids, or keeping your lunch box uniquely yours.

What size is the lunch box?

Our standard size holds approx. 40 oz (1200 ml), ideal for adults and kids. Check the product description for exact dimensions.

Can I use it in the oven or freezer?

Yes. The stainless steel container is oven- and freezer-safe (lid not included in oven use). Just remove the lid before heating.

Does it come with dividers?

Yes, it includes a removable, adjustable divider — great for separating snacks, fruits, and main meals without mixing flavors.

What material is the lunch box made of?

Made from premium food-grade 18/8 stainless steel — BPA-free, non-toxic, and plastic-free. Built to last for years.

Is it suitable for kids?

Definitely! It's rugged, lightweight, and customizable with name engravings — making it school-friendly and easy to identify.

Where is the lunch box made?

Blockhütte products are engineered in Germany and inspected to meet high European quality standards. Trusted by thousands across the U.S.

Stainless Steel Lunch Box - Blockhütte US

Material: Premium 18/8 Food-Grade Stainless Steel (Blockhütte Quality)
Dimensions: 6.69x4.72x2.36 [27oz] 7.48x5.51x2.36 [40oz] 8.26x6.26x2.36 [47oz]
Capacity: 27oz, 40oz, 47oz
Contents: 1x Premium Stainless Steel Lunch Box including seal, 2 removable stainless steel dividers, 1x replacement seal, 1x transport bag made of 100% cotton
Best Suited For: Meal prep, office lunch, school snacks, camping, and gym fuel
Care: Stainless steel lunch boxes care instructions

100% LEAK-PROOF & ADVENTURE READY – Say goodbye to messy spills in your bag. Our precision-engineered silicone seal ensures a hermetic, airtight closure with a satisfying snap. Whether it’s a bumpy commute to the office or a hike in the woods, your lunch stays exactly where it belongs.
PREMIUM 18/8 STAINLESS STEEL FEEL – Experience the weight and durability of professional-grade steel. Unlike flimsy plastic, the "Treasure Chest" is shatterproof, odor-resistant, and BPA-free. It feels cool to the touch and stays pristine for a lifetime of use.
MODULAR "NO-MIX" DESIGN – Customize your meal on the fly. With two removable dividers, you can create up to 3 flexible compartments. Keep your crisp greens away from your savory proteins—zero flavor transfer, just fresh, delicious food.
HYGIENIC & DISHWASHER SAFE – Cleanup is a breeze. The ultra-smooth, non-porous surface doesn't stain or hold onto yesterday’s smells. Simply pop it in the dishwasher, remove the easy-clean seal, and it’ll emerge with a brilliant, sterile shine every time.
THE ULTIMATE ECO-FRIENDLY BUNDLE – Join the plastic-free revolution without sacrificing style. Your kit includes the premium lunch box, 2 dividers, a replacement seal, a 100% cotton transport bag, and a digital recipe book. Built to last, designed to impress.

1. Is this box truly 100% leak-proof for liquids like soup?
Yes! We’ve repeatedly tested the reinforced Blockhütte seal against heavy shaking and pressure. While it’s perfect for thick sauces and dressings, we recommend keeping the box upright for thin liquids like clear soups to ensure a 100% bone-dry experience.

2. Does the steel leave a metallic aftertaste in my food?
Never. We use high-quality, non-reactive 18/8 stainless steel. It is completely toxin-free and unlined, meaning your food tastes exactly like you prepared it—with no chemical or metallic interference.

3. Is it safe for my kids to use?
Absolutely. Our products are DEKRA-certified annually for food safety. The edges are rounded and smooth, the materials are BPA-free, and the latches are designed to be sturdy yet manageable for smaller hands.

4. Can I put the lunch box in the freezer or oven?
Yes! The steel body is incredibly versatile. You can prep meals and freeze them, or even use the container (without the seal) to reheat food in the oven. Just remember: Never put stainless steel in the microwave.

5. How do I maintain the seal for the long term?
To keep the seal performing like new, we recommend removing it once a week for a thorough wash. We’ve even included a free replacement seal in your package to ensure your "Treasure Chest" remains leak-proof for years to come.

📦 Shipping & Delivery

We want to get your Blockhütte gear to you as fast as possible. Most orders are processed within 1 business day.

Shipping Rates (Contiguous U.S.)

Standard Ground ($50+): FREE (2-5 Business Days)
Standard Ground (Under $50): $10 (2-5 Business Days)
Premium Shipping: $20 (2-3 Business Days)
Express Shipping: $30 (1-2 Business Days)

Tip: Place Premium or Express orders by 12:00 PM CT for the fastest processing.

Important Notes

Free Shipping: Only applies to the contiguous United States.
Custom Products: Require extra processing time and are not eligible for expedited shipping.
PO Boxes: We ship via USPS (2-10 business days).
Alaska & Hawaii: Free shipping for orders $50+ or Ground for $15 (3-5 days).
Tracking: You will receive a tracking number via email once your order is processed.

International Orders?
Check our International FAQ for details.

Impressions from the Blockhuette community

Premium Stainless Steel Lunch Box

Up to 3 flexible compartments and leak-proof: Perfect for your break.

$33.97

FREE shipping & Return

Spend $50 for FREE shipping

Size:

27oz
40oz
47oz

Add engraving (+)

Quantity:

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Our precision-engineered silicone seal ensures a \u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"126\"\u003ehermetic, airtight closure\u003c\/b\u003e with a satisfying snap. Whether it’s a bumpy commute to the office or a hike in the woods, your lunch stays exactly where it belongs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003ePREMIUM 18\/8 STAINLESS STEEL FEEL\u003c\/b\u003e – Experience the weight and durability of professional-grade steel. Unlike flimsy plastic, the \"Treasure Chest\" is \u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"149\"\u003eshatterproof, odor-resistant, and BPA-free\u003c\/b\u003e. It feels cool to the touch and stays pristine for a lifetime of use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eMODULAR \"NO-MIX\" DESIGN\u003c\/b\u003e – Customize your meal on the fly. With \u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"63\"\u003etwo removable dividers\u003c\/b\u003e, you can create up to 3 flexible compartments. Keep your crisp greens away from your savory proteins—\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"187\"\u003ezero flavor transfer\u003c\/b\u003e, just fresh, delicious food.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003eHYGIENIC \u0026amp; DISHWASHER SAFE\u003c\/b\u003e – Cleanup is a breeze. The ultra-smooth, \u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"68\"\u003enon-porous surface\u003c\/b\u003e doesn't stain or hold onto yesterday’s smells. Simply pop it in the dishwasher, remove the easy-clean seal, and it’ll emerge with a brilliant, sterile shine every time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,4,0\"\u003e\u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"0\"\u003eTHE ULTIMATE ECO-FRIENDLY BUNDLE\u003c\/b\u003e – Join the plastic-free revolution without sacrificing style. Your kit includes the premium lunch box, \u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"136\"\u003e2 dividers, a replacement seal, a 100% cotton transport bag\u003c\/b\u003e, and a digital recipe book. Built to last, designed to impress.\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e"}

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Through our extensive travels in the past, it became even more important to us, for environmental and cost reasons, to always have something to eat and drink on hand. We opted for stainless steel lunch boxes and water bottles. However, these products were of inferior quality: either they were made of cheap stainless steel, were not food-safe, or they leaked. This set our goal: to bring the best lunch box to the market in terms of sustainability, quality, and value for money.

Nils & Malte

Founders of Blockhuette

100% Leak Proof

You surely know how annoying it is to constantly clean your bag because the old lunch box has leaked again? We do too, and because we were tired of it, we have widened our seal to make it close even better & reinforced it additionally. With this, leaking is a thing of the past!

100% Climate Neutral Lunch Box

All our products have been carbon neutral since 2021. We have partnered with ClimatePartner to offset our CO2 emissions generated during transportation and production. If you want to learn more about this, please have a look here.

Extraordinarily Safe

Every lunch box is equipped with our unique & fully rolled safety edges. This ensures that you and your loved ones will not suffer any injuries. (ATTENTION! These edges are exclusive to Blockhuette.)

Fast Shipping & Climate Neutral Delivery

Since packaging orders is still a top priority for us, you can be assured that your packages are usually packed on the same day of your order & dispatched the following day. :) The best way to see our speed for yourself is to try it out; you'll be amazed. Shipping with us is 100% carbon-neutral.

100% Recyclable & Plastic Free Packaging

Sustainability is a top priority for us! For packaging, we have opted for sustainable and recyclable cardboard. Even with the cardboard, we ensure that as little material as possible is used, to save resources.

Food-Safe & Taste-Neutral

For all lunch boxes, DEKRA annually confirms their food safety, ensuring you're making a wise choice here. Additionally, all components of your lunch box are free from substances such as BPA, BPS, and all plasticizers. Thanks to the high-quality 304 stainless steel, your lunch box is 100% taste-neutral.

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Stainless steel lunch box: leak-proof - everywhere

Tired of using supposedly leak-proof stainless steel lunch boxes, only to find they don't hold up? The alternative, plastic lunch boxes, may contain harmful substances like BPA & BPS. At Blockhütte, we are committed to creating the best possible products for our customers, which is why we've put extra effort into our stainless steel lunch boxes. We've improved the closure, seal, and the guidance of the seal. Our community's feedback has been overwhelmingly positive, highlighting that it's the small details that make a big difference. No more worrying about a messy bag due to a leaky lunch box.

Blockhütte is proud of its carbon-neutral stainless steel lunch box

We believe that the environment will recover from its current strain if we reduce waste. We want to provide you with products that are easy to use and of high quality. By using sustainable everyday products and making conscious decisions, we can reduce our average plastic consumption from 40 kg per year. But that's not all! We take personal responsibility for reducing the carbon emissions our startup generates. If they cannot be directly reduced, we will offset them as a first step. For our stainless steel lunch boxes with three compartments, we've chosen to partner with the Plastic Bank project. Plastic is collected at international hotspots such as Haiti, Indonesia, and Brazil.

Blockhuette has the best sainless steel lunch box

Yes, self-praise is no praise, which is why we rely on independent reviews from comparison platforms like www.Vergleichen.org, where we were named the comparison winner. This is due to our unbeatable quality, as well as our excellent customer service and the useful extras that come with your leak-proof stainless steel lunch box, such as two dividers or a transport bag. We are confident in our quality and offer a 3-year warranty on all stainless steel lunch boxes. Why wait? Trying is better than studying.

Advantages and Disadvantages of Stainless Steel Lunch Boxes

A stainless steel lunch box has many advantages over other materials. Stainless steel lunch boxes are oven-safe. Stainless steel is extremely durable and heat resistant. You can prepare your food in stainless steel lunch boxes in the oven. The stainless steel lunch box can be used for baking, or even to make lasagna. Stainless steel is a better choice than plastic because it does not contain BPA. They also do not contain any other plasticizers or binders like melamine, which is often found in bamboo dishes and lunch boxes. Microplastics will not get into your food if you scratch the bottom of a stainless steel lunch box with a fork. Lunch boxes made of stainless steel are almost indestructible with daily use. They can withstand extremely high and low temperatures without damage. They can be dropped from high places. They can survive falls from great heights and do not rust.

Hygiene and effects on humans

The hard and smooth surface of stainless steel is easy to clean. Its smooth surface is resistant to microorganisms and does not become cracked or brittle under constant use. The Hygiene Institute of the University of Leipzig found that bacteria are more likely to die on stainless steel surfaces than on plastic. Moreover, stainless steel lunch boxes are much easier to clean than those made of plastic or glass. Stainless steel has no adverse effects on human health. Since bacteria find no place to multiply on the surface of stainless steel, it is extremely hygienic. Additionally, when properly processed, stainless steel is also safe.

Stainless steel lunchbox for kids

We have the right size or bundle for everyone, no matter the age or purpose. You decide which size is best for you. It turns out that the 800ml stainless steel lunch box is ideal for children or for a small appetite at school. The 40oz lunch box is perfect for long school days and a well-deserved break at work.