What is the NFC function??

Thank you for the great question! Each Ocean Bottle is equipped with an NFC chip at its base. NFC is the same harmless technology which you will find in contactless payment cards, hotel room keys, office badges etc. We are building a platform which will enable you to fund more plastic collection impact when you tap your Ocean Bottle at a partner location around you. Today if you tap your Ocean Bottle onto an NFC activated smartphone, it will lead you to a webapp where you can register your Ocean Bottle to your name and find refill locations around you.

What is the diameter of the bottom of bottle please? I need to check it fits in my car bottle holder. Not all ‘standard’ bottles do.

The diameter of the base is 68mm (6.8cm)

How many hrs keep cold and hot? Basic details missing in the description

Hi Andrew, Thanks for asking! The bottle can keep the water cold for up to 18 hours. And it will keep the liquid hot for up to 9 hours (it should hold water above 40 degrees after 9 hours). Best regards, Ocean Bottle Team

Is the capacity 500 ml to the larger opening, or 500 ml to the top opening?

Hi Lavinia, Thanks for asking! The capacity of the entire bottle to the top opening is 500 ml, metal flask volume is 450 ml. Best regards, Ocean Bottle Team

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Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Obsidian Black)

Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Obsidian Black)

Product ID: 508492464

Details

Brand
Ocean Bottle
Capacity
350 ml
Colour
Obsidian Black
Recommended uses for product
Water
Special feature
Insulated safe

🔥Keeps hot for 6 hours

♻️67% recycled stainless steel

❄️Keeps cold for 18 hours

¥13537

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

♻️ Stay refreshed, stay responsible — the flask that fuels your day and saves the ocean!

TEMPERATURE MASTERY - Enjoy your coffee piping hot for 6 hours or your iced drinks refreshingly cold for 18 hours—perfect for long workdays or weekend escapes.
AWARD WINNING IMPACT - Backed by a 10-year warranty and recognized by The Telegraph and iF Design Award 2025, every purchase helps remove 11.4 kg of ocean plastic.
ZERO SPILL CONFIDENCE - 100% leak-proof 360° lid means no mess, no stress—toss it in your bag and go.
EFFORTLESS CLEAN ROUTINE - Dishwasher safe and easy to rinse, making your sustainable habit seamless and hassle-free.
SIP SUSTAINABLY STAY STYLISH - Crafted from 67% recycled stainless steel, this flask is your eco-conscious companion for every adventure.

The Ocean Bottle Brew Flask 350ml is a sleek, insulated travel flask made from 67% recycled stainless steel. It keeps beverages hot for 6 hours and cold for 18 hours with a 100% leak-proof lid. Dishwasher safe and backed by a 10-year warranty, this award-winning flask supports ocean plastic cleanup by collecting 11.4 kg of plastic per bottle sold.

Specifications

ASIN	B0BQWH2CYM
Age Range Description	Adult
Base Diameter	8 Centimetres
Best Sellers Rank	3,053 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 195 in Canteens & Water Bottles
Brand Name	Ocean Bottle
Cap Type	Screw Cap
Capacity	350 ml
Colour	Obsidian Black
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (207)
EU Spare Part Availability Duration	10 Years
Included Components	Bottle
Is Oven Safe	No
Is the item dishwasher safe?	Yes
Is the item microwaveable?	No
Item Dimensions W x H	8W x 19.6H centimetres
Item Type Name	Water bottle
Item Weight	12 Ounces
Manufacturer	Ocean Bottle
Material Type	Stainless Steel
Model Name	Flask
Number of Items	1
Pattern	Solid
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	Water
Special Features	Insulated, dishwasher safe, double wall, leak-proof, insulated, leak-proof
Theme	Sport
Unit Count	1.0 count
With Lid	Yes

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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1 week ago

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¥13537

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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Customer service was outstanding when I had questions about the product.

2 days ago

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