Frequently Asked Questions

We've provided a list of answers to common questions but if you have any further questions don't be afraid to drop us a line at 


Are iglu cups suitable for all types of drinks?

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.


Can the cups go in the microwave?

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


Is the cup dishwasher safe?

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 cup.


How do I clean my Iglu?

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


How can I clean my lid?

The lid is dishwasher safe (top shelf) or can be hand washed. 


How can I remove the slide portion of my lid? 

With the lid in the closed position apply pressure with your thumb to one side of the lid and try to generate an upward motion. 

If this doesn't work still apply pressure to one side of the lid and use a finger or the rubber end of a pencil to apply pressure from underside of the slide lid (through the hole of the larger section of the lid). 

To place the lid back on simply reverse the process making sure you line the lid up in the closed position. 

Once lined up angle one side of the slide portion in first (the slide piece has a tongue and the larger section a groove) and once one side is in apply pressure to the top of the lid and it will click into place.


Does the tumbler fit car cup holders?

Annoyingly all car manufacturers make their cup holders different sizes and to date our experience is that our tumblers fit larger cup holders but not smaller ones.


Is the cup leakproof?

We refer to the lid being splashproof rather than leakproof. We install a small air pressure valve in the lid to allow the pressure to escape and ensure the lids stays in place. This hole means that if you were to turn the cup upside down fluid would escape through the small hole.


Is the cup insulated?

Yes, our cup is insulated, keeps drinks hot for up to 6 hours and ice-cold for up to 12.


Can condensation form?

Our cups are double wall insulated, so the outside of its body will remain at room temperature, regardless of the temperature of its contents, whether it is icy or hot.


Why Food Grain (304) Steel?

We don't spare any effort when it comes to high-quality materials and innovative design. Stainless steel is safer than plastic and aluminium because they can be filled with any type of beverage without the risk of chemical contamination. That's why at Iglu we choose to rely on 18/8 stainless steel (AISI type 304) to make our high-quality, long-lasting, cups.


How can I dispose / recycle my Iglu cup?

Our cups are reusable objects designed to accompany you for as long as possible. If, however, you decide to recycle them, you can take them to your local recycling centre.


Where are Iglu products made?

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


What is the warranty for Iglu products?

Iglu offers a one-year limited warranty on all products purchased from and authorized retailers with proof of purchase. This warranty covers any manufacturer defects, such as thermal performance issues. To report a claim, please send an email to with proof of purchase, reason for claim and pictures of your product.