We've made some improvements for 2025, and now all our coffee cups feature screw lids. Our 12.5oz, 16oz, and 20oz cups now have a flip-lid design, making them even more convenient for on-the-go use.

The 12oz coffee cup is compact and versatile, making it ideal for home, office, or high street coffee machines. Its screw lid improves leak resistance, and the double-walled insulation helps retain heat. However, due to its shape, it may not fit all car cup holders, so we recommend checking your cup holder size if this is a key factor. The widest part of the base is 8.4cm.

The 12.5oz, 16oz, and 20oz coffee cups are designed for travel, commuting, and outdoor use. They feature a screw lid with a flip-lid mechanism, allowing for easy one-handed use. These models are leakproof when properly closed and are suitable for most car cup holders. The base diameter is 67mm, widening to 83mm, ensuring a secure fit in most cup holders.

If you're considering size compatibility with coffee machines, the 12.5oz cup is 13.2cm in height without the lid, the 16oz cup is 16cm, and the 20oz cup is 19.5cm.

Each cup offers excellent insulation, a durable build, and a sleek design suited for everyday use.

We know that keeping your drink hot is important, whether you're commuting, working, or just enjoying a slow morning. All Iglu coffee cups are double-walled and vacuum-insulated, which means they help your drink stay hot for longer. But insulation doesn’t make heat stay still—it simply slows down the cooling process. No cup or flask can keep a drink at the same temperature forever, but a well-insulated mug will significantly reduce heat loss over time.

How Well Do Iglu Coffee Cups Retain Heat?

When filled 90-95% full with the lid closed, here’s what you can expect:

• Starting Temperature: 90°C
• After 1 Hour: 75°C
• After 2 Hours: 66°C
• After 3 Hours: 59°C
• After 4 Hours: 54°C
• After 5 Hours: 48°C
• After 6 Hours: 45°C

This is based on lab-style testing, but real-world conditions can cause slight variations (usually ±3°C).

How to Keep Your Drink Hot for Longer

• Pre-heat your cup. Before pouring in your drink, fill the cup with hot water for a minute to warm up the inner walls. This stops your drink from losing heat too quickly.
• Fill it up. A nearly full cup holds heat much better than a half-full one. More liquid means better heat retention.
• Keep the lid closed. The more you open it, the more heat escapes.

Should You Use a Flask Instead?

If you're planning to drink your coffee over a few hours, an Iglu travel mug is ideal. However, if you won’t be drinking it for 6+ hours, a flask may be a better option.

• A travel mug is designed for drinking on the go. It slows down heat loss but doesn’t stop it entirely.
• A flask has thicker insulation and a smaller opening, reducing heat loss even further. This makes it ideal for keeping drinks hot all day.
• Neither will keep a drink hot forever. They simply slow down cooling, so after 6+ hours, even in a flask, your drink will be cooler than when you first poured it.

Think Your Cup Isn't Holding Heat? Let’s Check It Out

If you feel like your cup isn’t performing as expected, we’re happy to test it for you. Just send it to us with a note including your name and order number, and we’ll check it within 48 hours. If there's a fault, we’ll arrange a replacement.

Before sending your cup, please email us at hello@igluinc.com to let us know it’s on its way.

Our Iglu straw bottles are designed to keep your drinks cold for up to 24 hours, thanks to their double-walled, vacuum-insulated design. However, just like with hot drinks, how long your drink stays cold depends on several factors, including starting temperature, liquid volume, and the use of ice cubes.

How to Keep Your Drink Colder for Longer

To get the best cooling performance from your straw bottle, here are a few tips:

• Start cold. The colder your drink is when you pour it in, the longer it will stay that way. Refrigerated water will hold its temperature much better than room-temperature water.
• Use ice cubes. Adding ice significantly extends cooling time. Larger ice cubes or ice blocks melt more slowly than crushed ice, keeping your drink colder for longer.
• Fill it up. A nearly full bottle retains the cold better than a half-full one. More liquid means less air inside the bottle, which helps slow down warming.
• Keep it sealed. Every time you open the bottle, warm air enters, affecting the internal temperature. Keeping the lid closed when not in use will help maintain the chill.

Why "Up to 24 Hours Cold" Can Vary

While our bottles can keep drinks cold for up to 24 hours, real-world results depend on factors like outside temperature and exposure to heat. If you’re using your bottle in a hot environment, such as at the beach or in direct sunlight, the cooling effect will naturally reduce faster than if the bottle is kept in the shade or indoors.

If maximum cooling is your goal, we highly recommend using ice cubes and starting with chilled water rather than room-temperature liquids.

Our straw bottles provide great all-day cooling, making them perfect for work, the gym, hikes, and outdoor adventures. If you have any questions, we’re happy to help!

We love hearing from our customers, and your reviews help us improve and guide others in choosing the right Iglu product. Whether it’s a five-star rating or constructive feedback, we appreciate every review that comes through. However, there are a few key things to keep in mind when leaving a review to ensure it gets published.

What Makes a Review?

A review should be about your experience with the product itself—things like how well it works, how it fits into your daily routine, or anything you think future customers should know.

• How well your coffee stays hot throughout the day.
• Whether your straw bottle keeps drinks cold as expected.
• If the product fits in your cup holder or is easy to carry.
• Thoughts on the durability, lid mechanism, or overall quality.

When a Review Won’t Be Published

To keep our reviews section helpful and fair for everyone, there are times when a review won’t be approved:

• It’s threatening or abusive. We welcome honest feedback, but if a review contains offensive language, personal attacks, or threats, it won’t be published.
• We also don’t allow threatening reviews used to demand free products or refunds. If you've dropped and broken your lid, we understand it’s frustrating—but leaving a negative review or threatening to do so just to get a free replacement isn’t fair to us or other customers. Replacement lids are available for purchase, and we’re always happy to assist with genuine product concerns.
• The reviewer name doesn’t match the purchase record. Reviews should come from verified buyers, so if the name doesn’t align with our order records, we may not be able to approve it.
• It’s a customer service request rather than a review. If your review is asking for help with a faulty item, missing order, or general inquiry, it won’t be published. But don’t worry—we’re happy to assist. Just drop us an email at hello@igluinc.com, and we’ll sort things out.
• It’s unrelated to the product. Reviews should focus on the item purchased, so general feedback about shipping delays, website issues, or external factors may not be approved.
• It’s suspicious or spam-like. If a review seems fake, copied, or is repeatedly posted from the same user, it may not be published.
• The review provider may have flagged your review. Occasionally, reviews may be flagged by the review platform itself, and we may not always know the reason. This could be due to automated spam detection, certain keywords, or other platform rules outside of our control. If you believe your review was unfairly removed, feel free to contact us, and we’ll see if we can help.
• It contains false or misleading information. We take great care in ensuring our customers get accurate and useful advice, so reviews that include incorrect or misleading information may not be published.

For example, we recommend handwashing our cups to maintain their longevity. If a review claims the product is dishwasher safe because it has personally worked for them, another customer might follow this advice and end up damaging their product.

Similarly, while our travel mugs are leakproof when properly closed, they aren’t designed to be thrown loosely into a handbag where something could press against the lid. If someone writes that they do this without leaks, another customer may follow suit and have a different experience.

Our goal is to make sure reviews provide reliable and helpful information so that every customer has the best experience possible.

Need Help? We’re Here for You

If you’re having an issue with your order, we want to hear about it—just in the right place. Instead of leaving a review, please reach out to us directly at hello@igluinc.com, and we’ll do everything we can to help.

Please don’t overthink your review. We just wanted to provide this section as a helpful explainer, like the rest of this section of the website.

Absolutely! Unlike aluminium and plastic bottles, the stainless steel we use to produce our reusable cups is naturally uncoated and ideal for holding and maintaining all types of liquids. Aluminium is not suitable for contact with food and drink (especially hot and acid ones), as it is highly toxic. Our products are made of 100% high quality 18/8 stainless steel and are BPA free.

No. All iglu products are made of stainless steel and are not safe to put in the microwave.

For all of our coloured cups, washing in the dishwasher is not recommended to avoid damaging or discolouring the paint. We recommend hand washing your iglu.

Your iglu Food Pot however is safe to put in the top shelf of your dishwasher.

iglu products should be cleaned regularly—we recommend washing your iglu cups and bottles with warm water and soap after every use and drying and storing it with the top off.

iglu cups and bottles are NOT dishwasher safe!

Running an iglu through the dishwasher can cause paint to fade and the vacuum seal to become ineffective.

After washing your iglu, we recommend that you dry your beverage container by airing it out upside down and storing it with the lid off. This will help keep your Iglu looking and smelling fresh

iglu lids are dishwasher safe (top shelf) or can be hand washed. 

We refer to our coffee cups as being splash proof or spill proof. They generally offer good protection from spills and can be turned upside without water escaping.

Our first generation 12oz coffee cup has a vacuum lid which can be susceptible to pressure build up (see our helpful tips for further information).

Our second generation 12oz coffee cups, features a screw lid with a secure flip lid.

Our 16oz and 20oz coffee cups have screw lids and a secure push mechanism for added protection.

As a first step, we always recommend testing your iglu with cold water over your kitchen sink to make sure everything is working as it should for added peace of mind.

Our products are thoughtfully designed in the United Kingdom and responsibly made in China.

To the best of our knowledge China is the leading authority of vacuum technology. Whilst other countries have the ability to make single walled steel products, it's the double walled/vacuum technology where China currently leads the way.

iglu offers a one-year limited warranty on all products purchased from igluinc.com and authorized retailers with proof of purchase. This warranty covers any manufacturer defects, such as thermal performance issues.

If you run into any issues, please send us an email to hello@igluinc.com with proof of purchase, brief description of the issue and a video or pictures of your product which may help.

Shop as you usually would adding iglu’s to your cart and once you’re happy you’ve picked out your favourite iglus proceed to the checkout page.

Depending on the device you’re using and the size of its screen (i.e., mobile or laptop) the gift card section will appear at different stages.

On smaller screens (like your mobile) you’ll need to fill in your shipping details first and click “continue to shipping” from here you’ll see the section where you can add your gift card code. Enter your code and click the “apply” button and it will automatically apply the gift card for you.

On larger screens (like your laptop) the checkout stage will typically split into a dual screen, and you’ll be able to see the gift card section on the right-hand side. Enter your code and click the “apply” button and it will automatically apply the gift card for you.

From here complete the checkout process as you normally would.

If you’re still unsure, please pop an email through to us at hello@igluinc.com

We work closely with some of the largest and well-known manufacturers in their respective categories. Our bottles and coffee cups are manufactured at leading factories who continue to invest in the best people as well as the latest machinery and robotics.

Below we have listed out a number of the accreditations / certifications the factories we work with hold:

• US-FDA
• EUR-No 1935/2004
• EUR-Reach
• German-LFGB
• ISO 9001

On top of this we have one of highest inspection standards in our sector with iglu products receiving two full inspections prior to shipping to our customers. This ensures we provide our customers with the experience and quality they were hoping for and considerably raises the bar found with other brands and manufacturers (i.e., it is typical for many brands to only inspect 10% of their goods prior to shipment).