---
product_id: 203163644
title: "KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder"
brand: "keepcup"
price: "¥576"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/203163644-keepcup-thermal-vacuum-insulated-stainless-steel-reusable-coffee-cup-splashproof
store_origin: JP
region: Japan
---

# 12oz Capacity Reusable Vacuum Insulated KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder

**Brand:** keepcup
**Price:** ¥576
**Availability:** ❌ Out of Stock

## Summary

> Sip Sustainably ☕ - Elevate your coffee game with every refill!

## Quick Answers

- **What is this?** KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder by keepcup
- **How much does it cost?** ¥576 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/203163644-keepcup-thermal-vacuum-insulated-stainless-steel-reusable-coffee-cup-splashproof)

## Best For

- keepcup enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Stylish:** Built to last with a sleek matte finish, perfect for the modern professional.
- • **Sustainable Sipping:** Make a positive impact with every cup—just 66 uses to go green!
- • **Pure Taste Technology:** Electropolished stainless steel ensures your coffee tastes just as it should.
- • **Barista-Approved Design:** Crafted for a consistent coffee experience, whether at home or your favorite café.
- • **Splashproof Convenience:** Enjoy your drink on the go without the mess—splashproof lid included!

## Overview

The KeepCup Thermal is a 12oz reusable coffee cup made from electropolished 18/8 stainless steel, designed for durability and pure taste. With a splashproof lid and a commitment to sustainability, this cup is perfect for eco-conscious coffee lovers who want to enjoy their favorite brew at home or on the go.

## Description

KeepCup Thermal is made from 18/8 food-grade stainless steel, and is double-walled and vacuum insulated to keep the temperature of your drink for longer. The electropolished interior maintains the optimal taste of your beverage coffee. A drafted vessel for easy pour, it's lightweight, easy to carry and fits comfortably in your hand and cup holders. With a press fit sipper lid, it's lovely to drink from – lid on or off – and is designed for lasting drinking pleasure on the go. Available in three standard coffee volumes for the perfect barista pour: XS 6oz /177ml, M 12oz/ 340ml, L 16oz/ 454ml. The range features three different textured finishes: The 'soft touch' offers a velvet feel in our Latte, Alder, Spruce and Saskatoon colours; Nitro has a 'brushed' finish with polished metal; and Black is a slightly textured 'stone' finish. KeepCup is designed to be modular, so that you can replace the part, not the product. Made to be loved and looked after. Use it and join the reuse revolution. Reuse it and change the world. Don't waste today.

## Features

- The original iconic barista standard reusable coffee cup in insulated steel. Just 66 uses and you are having a positive impact when compared to single-use cups.
- Splashproof press fit Lid. Drinking pleasure, lid on or off.
- Pure taste vacuum insulated electropolished 18/8 stainless steel.
- Barista standard design ensures a consistent and enjoyable coffee experience at home or your favorite café.
- Made to last, BPS/BPA-free, insulated and durable to enjoy coffee adventures.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Reusability | Reusable |
| Finish Types | Matte |
| Material Type Free | BPA & BPS Free |
| Product Care Instructions | Hand Wash Only |
| Material Features | Electropolished 18/8 stainless steel, Vacuum insulated, BPS/BPA-free |
| Material Type | Stainless Steel |
| Item Weight | 0.21 Kilograms |
| Number of Items | 1 |
| Item Dimensions W x H | 3.3"W x 5.2"H |
| Unit Count | 1.0 Count |
| Capacity | 12 Fluid Ounces |
| Shape | Round |
| Pattern | Solid |
| Theme | Coffee |
| Occasion | Reuse |
| Color | Alder |
| Style Name | Medium |
| Additional Features | BPS/BPA-free, Vacuum Insulated |

## Product Details

- **Brand:** KeepCup
- **Color:** Alder
- **Special Feature:** BPS/BPA-free, Vacuum Insulated
- **Style:** Medium
- **Theme:** Specialty Coffee, Coffee Culture, Café

## Images

![KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder - Image 1](https://m.media-amazon.com/images/I/51yjx2zMa+L.jpg)
![KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder - Image 2](https://m.media-amazon.com/images/I/51C-ZsVD22L.jpg)
![KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder - Image 3](https://m.media-amazon.com/images/I/51T4U4VRRDL.jpg)
![KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder - Image 4](https://m.media-amazon.com/images/I/51T4U4VRRDL.jpg)
![KeepCup Thermal - Vacuum Insulated Stainless Steel, Reusable Coffee Cup with Splashproof Sipper Lid, Medium 12oz/340ml - Alder - Image 5](https://m.media-amazon.com/images/I/51pN9ZcMx+L.jpg)

## Available Options

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

## Questions & Answers

**Q: What material is the lid?**
A: It's a rubbery feeling plastic (I think polyethylene).

**Q: Does this lid fit all Keep Cup sizes? I accidentally melted the twisting bit of mine in the dishwasher.**
A: I have many different Keep Cups and the 8 oz size and 12 0z size lids are interchangable.  I am not sure about the thermal, because mine dripped coffee - it did not seal properly - and it would drip on my clothes when traveling so I got rid of the thermal cup.

**Q: Is this microwave safe?**
A: This is the stainless steel version and would not be safe for use in a microwave.

**Q: How long does this keep your drink warm**
A: I did a short test using my 12oz Thermal, filled the cup with water heated to 163°F/72.8°C, then put on the lid and started waiting.  After 10 minutes it had cooled down to 154°F/67.8°C, 20 minutes 149°F/65°C, 30 minutes 146°F/63.3°C.  This cup would likely not be my first choice if I wanted my drink to stay hot as long as possible (I would instead recommend like a thicker double-walled vessel with screw-on lid, for example, a Zojirushi, Yeti, or Tiger thermos).  While I do generally prefer the KeepCup's drinking experience over a more traditional thermos, there is a trade-off in heat retention.

I think it is also worth mentioning that James Hoffmann did a similar test in his "The Best Reusable Coffee Cups - 2019 Edition" video on YT, at the 2:54 mark there is a chart of detailing insulation results for the various cups tested, including a 6oz KeepCup Thermal.  Per his test, and starting with water at 158°F/70°C, the 6oz cup was down to 141.8°F/61°C after 10 minutes, 136.4°F/58°C after 20, and 131.9°F/55.5°C after 30 - so it would seem that the larger 12oz Thermal model does have slightly better heat retention than the smaller 6oz cup.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing KeepCup
*by Y***A on March 21, 2020*

It was live from the first sight. The cup is extremely ergonomic, very comfortable to use. Leakproof, once I had it closed in the backpack with some coffee inside, and everything stayed dry. The cup absorbs coffee’s odor, even after washing it’s still there. But this will happen with any type of material except glass.

### ⭐⭐⭐⭐⭐ A+
*by M***I on December 27, 2023*

Highly recommended

### ⭐⭐⭐⭐⭐ A Great Great Product!
*by I***R on March 30, 2020*

For a long time, I wanted to stop using single-use cups. So I looked for a good, long-lasting product. *this is the best* I've seen! The keepcup is well built, it keeps the coffee hot for 2 hours, and by now, it saved the waste of 400 single-use cups. Well done.

## Frequently Bought Together

- KeepCup Thermal, 12oz/340ml, Alder
- KeepCup Brew Cork - Reusable Coffee Cup Tempered Glass and Natural Cork, XS 6oz/177ml - Black
- KeepCup 12oz Reusable Coffee Cup. Toughened Glass Cup & Non-Slip Silicone Band. 12-Ounce/Medium, Black

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**Shop now:** [https://www.desertcart.jp/products/203163644-keepcup-thermal-vacuum-insulated-stainless-steel-reusable-coffee-cup-splashproof](https://www.desertcart.jp/products/203163644-keepcup-thermal-vacuum-insulated-stainless-steel-reusable-coffee-cup-splashproof)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-28*