Kenzai 14oz (400ml) reusable screw lid bamboo cup

Kenzai (健在) in Japanese means strong, healthy, hearty and robust and that’s exactly what the cup is! The kenzai cup is part of a growing movement to stop the use of single-use ‘paper’ cups. We offer 8 distinct, interesting, non-offensive and gender neutral designs for everyone. Designed with a thick 4mm sawtooth heat grip, screw bamboo lid and an ample 400ml (14oz) capacity – we thought of everything in it’s design.


(28 customer reviews)
🐼 Buy more than one Iku or Kenzai and save €2 each
Swatch image Big Leaf
Swatch image Diamonds
Swatch image Doughnuts
Swatch image Fern
Swatch image Geometric
Swatch image Lovebirds
Swatch image Paisley
Swatch image Small Leaf
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Kenzai Bamboo Beverage Cup Description Icons

  • 14oz/400ml capacity
  • 8 beautiful print designs to choose from
  • 4mm Thick Silicone heat grip with internal sawtooth heat dissipation
  • Made from sustainable bamboo fibre
  • Reusable time and again
  • Unique bamboo screw lock lid (not silicone) to stop drips and leaks
  • Bamboo cup and lid are fully biodegradable
  • Silicone sleeve and stopper are recyclable
  • Suitable for coffee, tea, chocolate (hot or iced), juices, smoothies…you name it!
  • Whole cup (including sleeve and stopper) is dishwasher safe
  • BPA and phthalate free
  • Save money from a wide range of coffee shops by using kenzai!

Our kenzai cup is part of a growing movement to stop the use of single-use ‘paper’ cups, it’s estimated that in 30 years use of the modern ‘paper’ cups that are used virtually everywhere over 2 trillion of them have ended up in landfill and due to the plastic content of these cups, less than 1% have been recycled. Kenzai (健在) in Japanese means strong, healthy, hearty and robust and that’s exactly what the cup is!

What makes our kenzai cups stand out from the crowd?

Our kenzai cups have several features that are unique and make them stand out from the reusable beverage cups available. These are, a bamboo (not silicone) screw lock lid, a thick thermal grip band, an extremely versatile capacity of 400ml (14oz), are made from 100% organic sustainable bamboo and are available in 8 unique designs.

Made from bamboo fibre, the most sustainable and fastest growing crop in the world kenzai is BPA, phthalate free. It’s strong, dishwasher safe (all of the mug including the lid and sleeve) and if you treat it right should last for years!

A major complaint about other reusable cups on the market are silicone lids. Although the silicone is food grade, people have still said it ‘taints’ the drink in the cup. So we made the decision to fit kenzai with a unique bamboo screw lock lid; this has the added bonus of stopping leaks as well as limiting the silicon on the cup.

Kenzai is great to drink from, it’s hard to believe this is a reusable cup, and comes in this stylish doughnuts print design. Being 14oz (400ml), it’s big enough to suit everyone – giving space at the top even if you only buy 12oz drinks! Kenzai can even be used for iced drinks, smoothies or juices, the handy stopper on the top can double as a straw hole, making it even easier to enjoy your drinks in the summer.

Product dimensions: Height (lid on) – 13.5cm, width top (lid on) – 10cm, width bottom – 6cm, width (lid off) – 8cm


Retailers offering discounts for bringing your own cup include:

  • Starbucks – 25p off at any Starbucks store or counter, including at cinemas and train stations. The discount excludes filter coffee. Starbucks will also start charging extra for single-use cups
  • Costa – 25p off in all stores apart from Northern Ireland on all hot and cold drinks.
  • Pret – 50p off at all stores (it increased from 25p off on 1 Jan 2018) on all hot and cold drinks.
  • Paul – 25p off, although Paul doesn’t have many stores outside London
  • Greggs – 20p off. If you bring your own cup, you’ll get 20p off any hot drink.
  • Caffè Nero – no money off, but you do get double stamps on your loyalty card. If you bring your own cup, you get twice the loyalty card stamps which means you only have to buy five drinks to get one free (normally it’s nine drinks)

Kenzai Bamboo Beverage Cup On Table 1 Kenzai Bamboo Beverage Cup On Table 1


28 reviews

28 reviews for Kenzai 14oz (400ml) reusable screw lid bamboo cup

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  1. Lisa

    Such great designs on these bamboo cups. They feel thick and sturdy, the silicone sleeve is the thickest I have felt on any cup like this. Love this bright and fun pattern, cheers me up when I’m drinking my coffee.

  2. Harry (UK)

    I like this design. Simple but fun. Understated but enough to get people looking. Coffee cups are now almost a status symbol of design and fashion now and these Kenzai cups are nicely designed. I just ordered the doughnuts design fur my sister. She will love itn

  3. Davie (UK)

    I have been looking for something to hold my hot drinks and this is exactly it. I wanted something eco friendly, strudy, cool to look at and easy to hold. I had no idea Yum Asia did rice cookers too! lol

  4. Tina (UK)

    Good reusuable cup with a bright design so I don’t forget it like I usually do. I’ve had this a month now and have used it every day. Sturdy and easy to clean. Just make sure the coffee place screws the lid on properly, they sometimes don’t!

  5. Ambre (UK)

    Very nice cup

    Beautiful, leakproof, eco-friendly and lightweight

  6. verity (UK)


    Look good.
    Very sturdy.
    Were a present, so awaiting report.

  7. Amazon Customer (UK)

    Very good service
    Very good product

  8. laurarebecca (UK)

    Improved my Costa experience
    Love it and it goes everywhere with me!! Durable, washes easily, and pretty, has enhanced my Costa experience ???? and has probably paid for itself by now as you get 25p back for using your own cup at Costa. Very happy

  9. Swordy (UK)

    Lovely Gift
    My wife and I received these as gifts from our Daughter. We’ve used them loads of times. They’re very light, seal really tightly and are easy peasy to clean. My Grand-daughter has appropriated mine so I am just about to order myself a new one. I’m going to order some extra as they’ll be ideal for using when we have visitors in the summer and we sit out in the garden. An added bonus is that when we have a coffee at some of the coffee shops in town we get a discount because we bring our own cups and cut down on waste and washing.

  10. Lee B (UK)

    Looks good. Well made. Keeps my drink hot, without leakage. What’s not to like?! Highly recommended!!

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