---
product_id: 535447785
title: "Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey)"
brand: "ocean bottle"
price: "R1802"
currency: ZAR
in_stock: true
reviews_count: 13
url: https://www.desertcart.co.za/products/535447785-ocean-bottle-brew-flask-350ml-insulated-travel-flask-for-hot
store_origin: ZA
region: South Africa
---

# Keeps hot for 6 hrs 67% recycled stainless steel Keeps cold for 18 hrs Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey)

**Brand:** ocean bottle
**Price:** R1802
**Availability:** ✅ In Stock

## Summary

> ♻️ Elevate your daily brew with purpose and style!

## Quick Answers

- **What is this?** Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) by ocean bottle
- **How much does it cost?** R1802 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/535447785-ocean-bottle-brew-flask-350ml-insulated-travel-flask-for-hot)

## Best For

- ocean bottle enthusiasts

## Why This Product

- Trusted ocean bottle brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Award-Winning Impact:** Backed by a 10-year warranty and recognized by The Telegraph & iF Design Award 2025, plus every purchase helps remove 11.4 kg of ocean plastic.
- • **Zero-Spill Confidence:** 100% leak-proof 360° drinking lid means no more bag disasters—carry it anywhere with total peace of mind.
- • **Effortless Clean Routine:** Dishwasher safe and easy to disassemble for deep cleaning, making your sustainable habit seamless and hygienic.
- • **Sip Sustainably, Stay Stylish:** Crafted from 67% recycled stainless steel, this flask is a bold eco statement for the conscious professional.
- • **Temperature Mastery On-The-Go:** Keeps your coffee piping hot for 6 hours and your iced drinks refreshingly cold for 18 hours—perfect for marathon workdays or weekend adventures.

## Overview

The Ocean Bottle Brew Flask 350ml is a sleek, insulated travel flask made from 67% recycled stainless steel, designed to keep beverages hot for 6 hours and cold for 18 hours. Featuring a 100% leak-proof 360° lid and dishwasher-safe construction, it combines durability with easy maintenance. Winner of the iF Design Award 2025 and The Telegraph’s Best Reusable Coffee Cup 2024, it supports ocean plastic cleanup by removing 11.4 kg of plastic per bottle sold, backed by a 10-year warranty with free replacement parts.

## Description

Shop at desertcart.co.uk for Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) : Sports & Outdoors.

Review: Yeti & Thermos are no match! - Moved over Thermos Stainless King & Yeti Rambler. This Ocean Bottle Drinking vessel is better than both. I know because my wife & I have had both and returned both. Ocean Bottle keeps drinks hot for 6 hours. I know because we've tested. The drinking from these Ocean cups is easy and clean. No mess, just good, easy supping. The turn tops to lock keep drinks inside with no drips or leaks. And the tops come apart in two bits for deeper cleaning. These aren't as rugged as the Yeti Rambler but they are far superior in terms of retaining heat and for overall usage. The yeti kept our coffees hot for 2 hours tops. The Thermos was better at around 4 hours but drinking from them was awful and awkward. I'm not sure what the low rating reviewers are on with their poor reviews of these Ocean Bottle vessels. They are superb, worth the money and possibly the best travel cups for coffee on the market.
Review: Love it - Fantastic item. Just the right size for my hands . It keeps my drinks hot for hours and has been totally leak proof in my bag. Love you can change the look with different colour lids

## Features

- KEEPS HOT FOR 6 HOURS & COLD FOR 18 HOURS – Coffee stays piping hot, iced drinks refreshingly cold and keeps ice frozen for over 24 hours.
- BUILT TO LAST FOR YEARS – Made from 67% recycled materials, fully repairable and recyclable. Voted the Gadget Show’s top on-the-go drinking accessory and won the iF Design Award 2025.
- 100% LEAK-PROOF – Our 360° drinking lid seals tight, so you can toss it in your bag with total confidence.
- EASY TO CLEAN – Rinse and go, or put it in the dishwasher. Quick to clean, easy to reuse — making your sustainable habit simple to stick to.
- AWARD-WINNING & MAKING REAL IMPACT – Loved by thousands and voted The Telegraph’s Best Reusable Coffee Cup 2024. Backed by a 10-year warranty with free replacement parts. For every Brew sold, we collect 11.4 kg of plastic — as of summer 2025, that total is 22.5 million kg.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BQWHC6TV |
| Best Sellers Rank | 11,875 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 560 in Canteens & Water Bottles |
| Brand | Ocean Bottle |
| Capacity | 350 Millilitres |
| Colour | Rock Grey |
| Customer Reviews | 4.4 4.4 out of 5 stars (174) |
| Date First Available | 22 Dec. 2022 |
| Item Weight | 320 g |
| Material | Stainless Steel |
| Model Number | 24OB00 |
| Product Dimensions | 8 x 8 x 19.6 cm; 320 g |
| Special Features | Insulated, dishwasher safe, double wall, leak-proof, insulated, leak-proof |

## Product Details

- **Brand:** Ocean Bottle
- **Capacity:** 350 Millilitres
- **Colour:** Rock Grey
- **Recommended uses for product:** Water
- **Special feature:** Insulated, dishwasher safe, double wall, leak-proof, insulated, leak-proof

## Images

![Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) - Image 1](https://m.media-amazon.com/images/I/61Tt1+EzzAL.jpg)
![Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) - Image 2](https://m.media-amazon.com/images/I/41hRE1wa0yL.jpg)
![Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) - Image 3](https://m.media-amazon.com/images/I/71heZzosV-L.jpg)
![Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) - Image 4](https://m.media-amazon.com/images/I/71ifSl+YJzL.jpg)
![Ocean Bottle Brew Flask 350ml | Insulated Travel Flask for Hot & Cold Drinks | Recycled Stainless Steel | Sustainable, Eco Friendly Gift (Rock Grey) - Image 5](https://m.media-amazon.com/images/I/91WCQ46BDdL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What is the NFC function??**
A: 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.

**Q: 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.**
A: The diameter of the base is 68mm (6.8cm)

**Q: How many hrs keep cold and hot? Basic details missing in the description**
A: 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

**Q: Is the capacity 500 ml to the larger opening, or 500 ml to the top opening?**
A: 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Yeti & Thermos are no match!
*by J***E on 17 July 2025*

Moved over Thermos Stainless King & Yeti Rambler. This Ocean Bottle Drinking vessel is better than both. I know because my wife & I have had both and returned both. Ocean Bottle keeps drinks hot for 6 hours. I know because we've tested. The drinking from these Ocean cups is easy and clean. No mess, just good, easy supping. The turn tops to lock keep drinks inside with no drips or leaks. And the tops come apart in two bits for deeper cleaning. These aren't as rugged as the Yeti Rambler but they are far superior in terms of retaining heat and for overall usage. The yeti kept our coffees hot for 2 hours tops. The Thermos was better at around 4 hours but drinking from them was awful and awkward. I'm not sure what the low rating reviewers are on with their poor reviews of these Ocean Bottle vessels. They are superb, worth the money and possibly the best travel cups for coffee on the market.

### ⭐⭐⭐⭐⭐ Love it
*by S***N on 12 January 2026*

Fantastic item. Just the right size for my hands . It keeps my drinks hot for hours and has been totally leak proof in my bag. Love you can change the look with different colour lids

### ⭐⭐⭐⭐⭐ Still perfect 9 months since purchase.
*by P***C on 21 September 2025*

Keeps drinks hot for a good 6 hours (maybe longer, I've not tested) even when the outside of the bottle is really cold to the touch. It hasn't leaked at all, so perfect to put into my bag or lay down. Used everyday for coffee since my 1st purchase back in January (9months). The brew flask lid (the only lid i've tried) is good to drink from unlike many flask / reusable bottles. Dishwasher safe and hasn't faded in colour. Great fit for my cars cup holders.

## Frequently Bought Together

- Ocean Bottle - Recycled Stainless Steel Brew Flask - Eco-Friendly & Reusable Bottle - Rock Grey - 12 oz
- Joseph Joseph 85025 Edge Dish Brush Green, 24

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**Shop now:** [https://www.desertcart.co.za/products/535447785-ocean-bottle-brew-flask-350ml-insulated-travel-flask-for-hot](https://www.desertcart.co.za/products/535447785-ocean-bottle-brew-flask-350ml-insulated-travel-flask-for-hot)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-03*