Custom thermal bottles have become one of the most popular promotional gifts all year round, especially during seasons when maintaining the temperature of drinks is essential. Perfect for keeping coffee warm in winter or water cool in summer, they are versatile, eco-friendly, and highly effective at promoting your brand.

In this post, we’ll address the most common questions about these bottles and explain why thermal bottles make a great promotional choice.

How do thermal bottles work?

The secret lies in vacuum insulation. Unlike regular containers, thermal bottles have a double-walled structure with an airless space in between. This prevents temperature transfer to the outside, keeping contents hot or cold for hours without affecting the bottle's exterior. That makes them ideal for daily use or outdoor activities.

Most thermal bottles are made of stainless steel, though some use aluminium. The inner layer is often coated in copper, and certain models feature anti-condensation systems for added comfort.

Are thermal bottles BPA-free?

Yes, generally they are. Stainless steel is naturally BPA-free, unlike some plastics that contain bisphenol A. That said, because there are many models with different structures, we always recommend checking product specifications or consulting our team for clarification.

How should a thermal bottle be cleaned?

Hand washing is strongly advised to preserve the bottle and its printed logo. After cleaning, it should be left open to dry and ventilate completely. For frequent use, regular washing is important. And if stored for a long time, it should be cleaned before use.

What’s the difference between a thermal bottle and a thermos?

Internally, both products share the same insulating system, but they differ in size and features. A thermos is typically larger and designed for group outings, often coming with extras like cups, filters, or special lids.

The thermal bottle, on the other hand, is more compact and practical—great for daily life, from the office to the gym or short walks. Both can be personalized and used in different promotional contexts.

How to customize thermal bottles?

There are two main print areas: circular wrap-around or side placement. Common customization techniques include:

• Pad printing: quick, economical, ideal for colour logos.

• Screen printing: good for larger or multicolour designs.

• Laser engraving: a premium option, long-lasting and elegant.

The best technique depends on the bottle model and logo design. Not all methods are suitable for every product, so it’s important to choose accordingly.

When to offer custom thermal bottles?

This type of promotional item is highly versatile and appreciated by all kinds of audiences. Ideal occasions include:

• Winter or summer campaigns, thanks to their thermal usefulness.

• Corporate welcome packs, for new employees.

• Trade shows and events, to leave a lasting impression.

• Sustainability initiatives, promoting reusable solutions.

There are models to suit every occasion and target, from sleek and professional to fun and casual. The key is aligning design and personalization with your brand identity.

A practical, eco-conscious, and valuable gift

Custom thermal bottles are a smart promotional choice—useful, long-lasting, and aligned with today’s sustainability values. Whether gifted individually or as part of a set, they deliver visibility and appreciation.

Get in touch with us and we’ll help you choose the right model and branding solution for your business.