• KUNU® Wärmflasche 3.4l - KUNU Store
  • KUNU® Wärmflasche 1l - KUNU Store
  • KUNU® Wärmflasche 3.4l - KUNU Store
  • KUNU® Wärmflasche 3.4l - KUNU Store
  • KUNU® Wärmflasche 3.4l - KUNU Store
  • KUNU® Wärmflasche 3.4l - KUNU Store
  • KUNU® Wärmflasche 3.4l - KUNU Store

KUNU® Hot Water Bottle

19,99€
19,99€ 15,99€
Tax included. Shipping calculated at checkout.

For gentle warmth in everyday life. 🤎

  • Hours of warmth
  • Particularly soft material
  • Natural Relief for Pain & Tension
Color
Liter
Low stock
  • Lifetime Support & Spare Parts Service
  • 30-day money-back guarantee
  • Fast shipping

Dimensions

Available Sizes: 1L, 1.8L and 3.4L
Material: Natural rubber & polyester

Product details

  • Hours of Warmth: Up to 5 hours of warmth
  • Exclusive Plush Fabric: Particularly durable fabric that remains in good condition even after several washes and hardly loses any fibers
  • High-Quality Materials: The hot water bottle is made of degradable natural rubber
  • 3 Sizes: 1L, 1.8L and 3.4L
KUNU® Hot Water Bottle

19,99€
KUNU® Wärmflasche 3.4l - KUNU Store

Gentle warmth for you

Whether you're cold, battling period pain, or want to relieve tension – our hot water bottle is there for you. Once filled, it retains heat for hours and provides soothing relaxation – with minimal effort.

Safe and durable

For the hot water bottle, we rely on genuine natural rubber, which is not only free from harmful substances but also particularly heat-retaining. The fluffy material of the hot water bottle is also high-quality processed and machine washable.

Available in your favorite size

Whether compact for on the go or a bit larger for extra long-lasting warmth – our hot water bottles are available in sizes 1 l, 1.8 l, and 3.4 l. All models are available in Fluffy Cream and Fluffy Black.

The KUNU Hot Water Bottle Belt

Our tip: Would you like to enjoy the warmth on the go or in a busy everyday life? Then take a look at our hot water bottle belt – thanks to the practical Velcro fastener, the warmth stays exactly where you need it.

KUNU Warranty

✓ 30-day money-back guarantee
✓ Lifetime support & spare parts service

Learn more

Why over 80,000 customers already trust us

Quality and safety are our top priorities. From initial product development to production, design adjustments, and packaging, we are involved in all processes, which allows us to guarantee the highest quality.

However, if something does break, our lifetime KUNU spare part guarantee applies, and you will receive every part replaced by us free of charge at any time.

familie strand

From Parents for Parents

We are Julie and Aaron: As parents of two children, we know how important it is to have a supportive and loving home. Therefore, we place a special focus on developing products that enrich and simplify the lives of families with children. 🤎

About Our Vision

What is a hot water bottle good for?

Hot water bottles warm you up on cold days and help with stomach aches and muscle tension. The warmth relaxes the muscles and cramped tissue, thus relieving pain. At the same time, the hot water bottle helps you relax and can noticeably reduce stress.

Can boiling water be put into a hot water bottle?

No, when using hot water bottles, it is important never to fill them with boiling water, but only with warm water. Boiling water can damage the material and impair the product's lifespan. Additionally, handling boiling water can lead to severe injuries if the bottle leaks, overflows during pouring, or the hot water bottle becomes too hot. Even with warm water, our product achieves a good temperature and satisfactory results.

How long does a hot water bottle stay warm?

That depends on the hot water bottle. Our models are made of high-quality natural rubber and stay comfortably warm for up to five hours. So you can relax and lean back.

What size is right for me?

  • 1 liter: Compact and perfect for mobile use. Fits seamlessly into our Kunu hot water bottle belt for targeted warmth wherever you need it.
  • 1.8 liters: The golden mean – balanced in size and heat duration. Perfect for sustained warmth without being too bulky.
  • 3.4 liters: For those who desire extra warmth. Generously sized for long-lasting thermal comfort, ideal for particularly cold days.

What makes the plush fabric so durable?

Our high-quality plush fabric is not only exceptionally soft but also remarkably durable. A special weaving technique ensures that it retains its shape even after many washes and hardly sheds any fibers. This way, it stays pleasantly soft and provides lasting cuddly comfort – day after day.

What's included in the delivery?

The package contains a hot water bottle and a fluffy cover that encloses the hot water bottle. It comes in stylish gift packaging – perfect as a gift. You will also receive an instruction manual and a 20% discount coupon, which you can apply to all our products.

How long can I safely use my hot water bottle?

As a general rule, you should regularly and carefully check your hot water bottle – especially to ensure that it is still leak-proof and that the material appears unchanged and undamaged. For safety reasons, we recommend replacing the hot water bottle after approximately one year of regular use.

Your fluffy everyday companion

Whether you're always cold, suffer from period pain, or want to relieve muscle tension: our hot water bottle will delight you. The water-filled cushion provides continuous warmth and ensures comfort and relaxation in every situation. While working from home, reading on the sofa, or warming up your bed before falling asleep, people have been using hot water bottles for over 500 years. In addition to comfort, the hot water bottle acts as a natural medical product. It provides pain relief and comfort for abdominal pain, tension, and colds. Our products are not only functional but also impress with their appearance and feel. The extra-fluffy, soft plush material of the cover pampers the skin and feels wonderful. Whether Fluffy Black or Fluffy Cream, choose your favorite design and order this premium hot water bottle.

KUNU® Wärmflasche 3.4l - KUNU Store

High quality standards and excellent materials

There are many hot water bottles, but not every product is harmless. In addition to the color and design, the quality of the products is also crucial. With our models, excellence comes first. We forego plastic and consciously rely on environmentally friendly 3 mm natural rubber. This is not only chemical-free, but also retains heat for a particularly long time. For the cover, we have developed a pollutant-free extra-fluffy fabric that feels simply wonderful! Thanks to our efforts to create a high-quality product and the use of harmless materials, our hot water bottles have received the Prüfengel certificate with a grade of very good (1.3) from the German Institute for Product Testing. At the same time, our models are robust and can easily withstand daily use. So you will enjoy your hot water bottle for a long time!