---
product_id: 261470706
title: "Rainbow Mountain"
brand: "boss"
price: "AR$263256"
currency: ARS
in_stock: true
reviews_count: 8
category: "Boss"
url: https://www.desertcart.com.ar/products/261470706-rainbow-mountain
store_origin: AR
region: Argentina
---

# 110mg caffeine per 6oz can Rainbow Mountain Blend from 7 regions Authentic Japanese origin Rainbow Mountain

**Brand:** boss
**Price:** AR$263256
**Availability:** ✅ In Stock

## Summary

> 🌟 Sip the legend: Japan’s iconic BOSS Coffee, now fueling your hustle!

## Quick Answers

- **What is this?** Rainbow Mountain by boss
- **How much does it cost?** AR$263256 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/261470706-rainbow-mountain)

## Best For

- boss enthusiasts

## Why This Product

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

## Key Features

- • **Ready-to-Drink Convenience:** Slip it in your bag and enjoy authentic Japanese flash brew anytime, anywhere
- • **Premium Rainbow Mountain Blend:** Expertly crafted from 7 Guatemalan coffee regions for a unique, smooth flavor 🌈
- • **Japan’s #1 Canned Coffee Brand:** Trusted for 30+ years, dominating vending machines nationwide 🇯🇵
- • **Power-Packed Espresso Doubleshot:** 110mg natural caffeine in a perfectly portable 6oz can for on-the-go energy ☕
- • **Clean, Gluten-Free & Naturally Brewed:** Contains milk, no gluten, only 70 calories—indulgence without compromise

## Overview

BOSS Coffee by Suntory’s Rainbow Mountain Blend is Japan’s top-selling canned coffee, delivering a smooth, light roast espresso doubleshot with 110mg of natural caffeine in a convenient 6oz can. Sourced from seven Guatemalan regions and flash brewed for authentic flavor, it’s a ready-to-drink, gluten-free pick-me-up with just 70 calories—perfect for busy professionals craving premium coffee culture on the move.

## Description

desertcart.com: BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten : Grocery & Gourmet Food

Review: Delish! Worth Every Penny, No Doubt! - Not quite as pristine as the black but still so yummy. They call it BOSS for good reason… it leads head and shoulders above the rest! Slightly smokey, clean and smooth. Perfect pick me up treat in the afternoon. I regret nothing!
Review: Refilled my HEAT gauge. - Bought this as a fan of Yakuza, got made a fan of BOSS coffee. Genuinely, insanely good coffee that beats the hell out of Starbucks RTD's which by my estimation, are far more concerned with sugar than coffee. 110mg of caffeine per can means you're getting a kick without blowing your heart valves and the modest size means you can easily put down a can in its entirety in a sitting, as well as it being convenient for travel. I wish this was cheaper or more readily available, I would drink this regularly if I could.

## Features

- NO.1 CANNED COFFEE BRAND IN JAPAN - Conveniently found in vending machines and convenience stores across the country, Suntory has innovated BOSS Coffee for over 30 years to become the no.1 canned coffee brand in Japan (2021, Intage).
- RAINBOW MOUNTAIN BLEND - Using beans sourced from seven grow regions managed by Guatemalan Coffee Association farmers, Suntory’s expert brewers blend the unique flavors produced in diverse climates to create our signature Rainbow Mountain Blend.
- STRAIGHT FROM JAPAN - Due to popular demand from BOSS fans, we are delighted to bring Rainbow Mountain Blend, with the same great packaging and flavor as in Japan, to the US market. Enjoy an authentic taste of Japanese coffee culture.
- READY TO DRINK COFFEE - Rainbow Mountain's 6 fl.oz can is perfect to slip into a pocket or bag and take on-the-go for a high quality coffee pick-me-up anytime, anywhere.
- NATURALLY BREWED CAFFEINE - With only 70 calories and 110mg of naturally brewed caffeine, don't underestimate this handy can size. Rainbow Mountain Blend packs the equivalent of a doubleshot of espresso in every can, more than enough to get you going.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L4KNBV6 |
| Age Range Description | 18+ |
| Allergen Information | Milk |
| Best Sellers Rank | #40,166 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #41 in Ready to Drink Liquid Coffee |
| Brand | BOSS |
| Brand Name | BOSS |
| Caffeine Content Description | Caffeinated |
| Caffeine Content Per Serving | 110 milligrams |
| Certificate Type | JPPS |
| Coffee Blend Name | Rainbow Mountain Blend |
| Coffee Roast Level | Light Roast |
| Coffee Type | Prepared Coffee Drink |
| Container Type | Can |
| Country as Labeled | Japan |
| Customer Reviews | 4.6 out of 5 stars 1,124 Reviews |
| Diet Type | Gluten Free |
| Flavor | Coffee with milk and sugar |
| Item Dimensions | 2.08 x 2.08 x 4.13 inches |
| Item Form | Liquid |
| Item Package Weight | 2.77 kg |
| Item Type Name | Canned Coffee |
| Item Volume | 2128.8 ml |
| Item Weight | 6.08 ounces |
| Liquid Contents Description | Coffee |
| Manufacturer | Suntory B&F N.A. |
| Number of Items | 12 |
| Package Information | Can |
| Region of Origin | Japan |
| Roast Level | Light Roast |
| Size | 6 Fl Oz (Pack of 12) |
| Special Ingredients | Milk, Sugar |
| Specialty | Flash Brew |
| Sweetness Description | sweet |
| UPC | 088857019949 |
| Unit Count | 72 Fluid Ounces |
| Variety | Rainbow Mountain Blend |

## Product Details

- **Brand:** BOSS
- **Caffeine Content Description:** Caffeinated
- **Flavor:** Coffee with milk and sugar
- **Item Form:** Liquid
- **Roast Level:** Light Roast

## Images

![Rainbow Mountain - Image 1](https://m.media-amazon.com/images/I/819RtFl76DL.jpg)

## Questions & Answers

**Q: Anyone know if this is actually brewed and canned in japan, or is it just the recipe from japan and canned in the us?**
A: Thank you for your interest in BOSS coffee.
All BOSS US products (At Cafe Au Lait, Rainbow Mountain and Black) are brewed and canned in japan.
They are all exported from Japan.
We hope you will enjoy BOSS coffee!

**Q: Do these need to or can be refrigerated?**
A: They do not have to be refrigerated . They taste better hot or cold. I prefer cold.

**Q: Anyone know why only the coffee is sold and not the tea? Tried contacting seller but no luck so posting here in hopes for a reply.**
A: Probably gauging interest in the brand. If you’re in the US, coffee is universally more consumed than tea (I prefer tea). The coffee being available online is relatively new. They also must be experiencing difficulties in the warehouse as there are tons of cans that will arrive dented and damaged while the outer box looks untouched. This appears to be an issue with how the individual cans are packaged as opposed to Amazon delivery methods. So TLDR: give it some time and they might bring tea as well

**Q: Once empty, can these cans be crushed?**
A: If you put enough force into it then yeah, they should be crushable

## Customer Reviews

### ⭐⭐⭐⭐⭐ Delish! Worth Every Penny, No Doubt!
*by P***U on June 15, 2026*

Not quite as pristine as the black but still so yummy. They call it BOSS for good reason… it leads head and shoulders above the rest! Slightly smokey, clean and smooth. Perfect pick me up treat in the afternoon. I regret nothing!

### ⭐⭐⭐⭐⭐ Refilled my HEAT gauge.
*by D***D on May 12, 2026*

Bought this as a fan of Yakuza, got made a fan of BOSS coffee. Genuinely, insanely good coffee that beats the hell out of Starbucks RTD's which by my estimation, are far more concerned with sugar than coffee. 110mg of caffeine per can means you're getting a kick without blowing your heart valves and the modest size means you can easily put down a can in its entirety in a sitting, as well as it being convenient for travel. I wish this was cheaper or more readily available, I would drink this regularly if I could.

### ⭐⭐⭐⭐⭐ Wow. Where do I even begin?
*by M***N on December 30, 2020*

Let me take you back to October of 2017. I had made my first trip to the wonderful land of Japan and nestled in among the good people who live there. During my stop in Kyushu, I ran across this BOSS Rainbow Mountain Blend coffee at an AEON Mall. At the behest of my friend who I was staying with at the time, I bought some to consume on the spot. It was already chilled, and as soon as the coffee hit my taste buds, I was in for a real treat. I was sure to buy up some more to take home with me on the flight back to America. Don't let the 6 oz size fool you. These little coffees pack a wallop and the taste is phenomenal. Even though I'm not one to get cream or sugar in my coffee (as Brian Griffin says, I like mine black as sin), the combo of everything feels just right. The quality of the roast is quite solid. Consisting of slightly woody notes, with not a sign of burnt flavor, this should appease any coffee snob anywhere. I'm so glad Suntory finally came to their senses and started properly importing this stateside for our enjoyment. The price is certainly higher than your typical Starbucks brew, but this really is a unique experience, almost a rite of passage that everyone should go through, and a good taste of what the Japanese like to call quality coffee. This beverage gets my seal of approval. Even if you find the price a bit too high, I'd still consider getting one case for the novelty factor and, who knows, maybe you'll get hooked? :)

## Frequently Bought Together

- BOSS Coffee by Suntory – Rainbow Mountain Blend Japanese Flash Brew Coffee, 6oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Coffee with Milk, 8oz 12 Pack, Imported from Japan, Au Lait, Espresso Doubleshot, Ready to Drink, Contains Milk, No Gluten
- BOSS Coffee by Suntory - Japanese Flash Brew Original Black Coffee, 8oz 12 Pack, Imported from Japan, Espresso Doubleshot, Ready to Drink, Keto Friendly, Vegan, No Sugar, No Dairy

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**Shop now:** [https://www.desertcart.com.ar/products/261470706-rainbow-mountain](https://www.desertcart.com.ar/products/261470706-rainbow-mountain)

---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-10-04*