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A travel mug should keep coffee, tea or water reliably hot or cold, and be easy to carry without spills. In practice, poor insulation isn’t the only thing that can cause problems: unsuitable lids, hard-to-clean tops and the wrong size can all lead to unnecessary expense.
Before you buy, it’s worth looking at how the mug is actually made rather than relying on general marketing claims. Key factors include material, insulation method, capacity, leak resistance and ease of cleaning.
A double-walled mug has two layers of material with a gap between them. This design can reduce heat transfer. With vacuum insulation, however, most of the air is removed from the gap. This can help keep the temperature stable for longer, but usually involves a more complex construction.
An insulated plastic cup may be fine for short journeys. If you want to keep drinks in the office, on the train or in your rucksack for several hours, check the manufacturer’s stated heat and cold retention times.
Calling a travel mug leakproof is only useful if the lid, sealing ring and carrying position all work together. A drinking lid designed to prevent splashes may not be suitable for carrying the mug on its side in a bag. Fizzy drinks can also increase the pressure inside.
So look for:
Many insulated mugs aren’t dishwasher-safe. Narrow openings, straws and multi-part lids can make daily cleaning more difficult. Don’t leave milk, sugar or fruit juice residue in the mug for long periods.
A wide opening makes cleaning easier. For stainless steel models, soft brushes and mild cleaning products are usually recommended. Abrasive cleaners can damage surfaces and seals.
A stainless steel travel mug is suitable for many uses, as stainless steel can be durable, reusable and neutral in taste. Double-walled models made from 18/8 or 304 stainless steel are widely available. These designations refer to the material composition, so check them against the manufacturer’s information.
For plastic or glass models, check that they’re suitable for food contact and note the temperature limit. According to the product information, the 5five Estiva Tumbler is made from polystyrene and is suitable for cold and hot drinks up to 70 °C. It’s therefore more of a basic drinking cup than a travel mug designed to keep drinks insulated for a long time.
In the EU, materials that come into contact with food are covered, among other things, by Regulation (EC) No 1935/2004. Additional requirements may apply depending on the type of plastic. A statement of compliance describes suitability for the intended food contact, but it isn’t a guarantee of a particular insulation time.
The right size depends on your drink and how you’ll be carrying it:
A 350 ml travel mug will often fit under coffee machines and in smaller cup holders. A 500 ml travel mug gives you more capacity, but takes up more space. For a 720 ml travel mug, also check the weight, height and fit in your rucksack.
Don’t just compare the number of hours stated; check the conditions behind it too. Temperature, fill level, starting temperature and how often you open the mug all affect how long it will keep drinks hot or cold.
A one-handed lid can be useful when cycling or during a busy working day. For carrying the mug in a bag, a lid that locks securely matters more than one that opens especially quickly. Take care when drinking hot drinks, as there’s a risk of scalding.
Why it suits this profile: This compact 350 ml travel mug is designed for coffee or tea on shorter journeys. Its double-walled construction and silicone grip make it comfortable to use.
The product information clearly states that the lid isn’t completely leakproof. That makes it easier to use the mug appropriately: upright in a cup holder rather than loose in a bag.
350 ml capacity, BPA-free plastic body, silicone band and dishwasher-safe cleaning according to the product description.
Why it suits this profile: This slim stainless steel travel mug is designed for commuting and everyday use at the office. According to the product information, the flip-top lid can be operated with one hand.
The product information describes a lockable flip-top lid as leakproof. Even so, make sure the lock is fully closed before carrying it.
Stainless steel body, 400 ml capacity, extra-slim design and stated heat retention of up to 8 hours and cold retention of up to 16 hours.
Why it suits this profile: Its larger capacity is ideal for long working days, hikes, sport or days out. The built-in straw makes it easier to drink on the go.
The guidance rules out fizzy drinks and recommends hand-washing. These limitations are worth bearing in mind before you buy if easy cleaning or sparkling water matters to you.
720 ml capacity, 316 stainless steel according to the product information, a drinking straw and a design intended for sport, travel and outdoor use.
Why it suits this profile: This slim 350 ml bottle fits in many bags and is well suited to coffee, tea or water during the working day.
The manufacturer describes a rubberised screw-top lid and a leakproof design. It also specifies hand-washing and says not to use the bottle in a microwave or freezer.
Double-walled stainless steel, 0,35 l capacity and, according to the product information, heat retention of up to 12 hours and cold retention of up to 24 hours.
We’ve put together a complete, regularly updated list of products that meet these strict selection criteria and fully comply with the safety regulations in force in the EU.
The lifespan of a travel mug depends largely on how you look after it day to day. Rinse it after use and leave the lid and sealing ring open to dry. Check regularly that the lid still closes properly and that there are no cracks.
For hot drinks, it’s a good idea to warm the mug first with hot water. Don’t fill it right to the brim, and check the drinking temperature carefully. Only use fizzy drinks, milk-based drinks and perishable liquids if the manufacturer explicitly says they’re suitable.
It depends on the insulation method, fill level, starting temperature and how often you open the mug. Vacuum-insulated stainless steel models are generally designed to keep drinks hot for longer. Manufacturer claims such as ‘hot for up to 8 hours’ are a guide and don’t mean the drink will stay at the same temperature in all conditions.
Not always. Some models are dishwasher-safe, while others are specifically intended for hand-washing only. Always follow the care instructions for the product you choose. For lids with seals and drinking openings, hand-washing may be gentler.
For a short commute, 350 to 400 ml is often enough. If you’ll be using the mug for several hours or prefer larger portions, you could choose 500 ml. A 720 ml mug is a good option for sport and outdoor activities, as long as its weight and dimensions suit the way you’ll carry it.