---
product_id: 384350954
title: "GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite"
brand: "gsi outdoors"
price: "€ 16.25"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.de/products/384350954-gsi-outdoors-boulder-10-flask-10-fl-oz-graphite
store_origin: DE
region: Germany
---

# 10 fl. oz capacity with molded graduation marks Hinged, leak-proof silicone grip cap Shatter-resistant copolyester body GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite

**Brand:** gsi outdoors
**Price:** € 16.25
**Availability:** ✅ In Stock

## Summary

> 🥃 Elevate your sip game—durability meets sleek design for the unstoppable you.

## Quick Answers

- **What is this?** GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite by gsi outdoors
- **How much does it cost?** € 16.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/384350954-gsi-outdoors-boulder-10-flask-10-fl-oz-graphite)

## Best For

- gsi outdoors enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Lightweight 10 fl. oz capacity fits snugly in your bag or even a sweatshirt pocket—carry your vibe anywhere.
- • **Secure & Convenient:** Hinged top with silicone grip stays attached and opens smoothly, so you never lose your cap on the go.
- • **Effortless Hydration:** Wide mouth design allows for easy filling, pouring, and drinking—no spills, no fuss.
- • **Precision at a Glance:** Molded graduation marks let you measure your pour perfectly every time—because details matter.
- • **Adventure-Ready Durability:** Shatter-resistant copolyester resin with a grippy silicone bumper means this flask can handle every journey without a scratch.

## Overview

The GSI Outdoors Boulder 10 Flask is a 10 fl. oz, shatter-resistant, and lightweight flask featuring a durable copolyester resin body with a silicone bumper for extra grip and protection. Its wide mouth ensures easy filling and drinking, while the hinged silicone grip cap prevents loss and leaks. Molded graduation marks provide precise measurement, making it the perfect compact companion for outdoor adventures and daily use.

## Description

The GSI Outdoors' Boulder Flask features a fun see-through and shatter-resistant design to take on your adventure.

Review: Bastante resistente, compacta y ligera. No tiene fugas y se puede guardar hasta en una sudadera por el tamaño.
Review: The GSI Outdoors Boulder Flask Thermos is a fantastic companion for outdoor enthusiasts and travelers looking to enjoy their favorite beverages on the go. This flask has quickly become my go-to choice for its style, reliability, and impressive thermal performance. First and foremost, the design of the Boulder Flask is sleek and eye-catching. The durable stainless steel construction not only looks great but also ensures long-lasting durability. The textured grip adds a touch of elegance and provides a secure hold, preventing any accidental slips. When it comes to thermal performance, this flask truly shines. The double-wall vacuum insulation keeps my beverages hot or cold for extended periods. Whether I'm sipping on a steaming cup of coffee during a chilly hike or enjoying a refreshing cold drink on a hot summer day, the Boulder Flask consistently delivers on its promise. Another feature that sets this flask apart is its convenient size. With a generous 10-ounce capacity, it strikes the perfect balance between portability and capacity. It easily fits into my backpack or bag without taking up too much space, making it ideal for outdoor adventures or daily commutes. The leak-proof cap ensures worry-free transportation, preventing any spills or leaks. I appreciate the thoughtful design that allows for easy pouring and drinking, thanks to the well-designed spout and integrated cap.

## Features

- Shatter-resistant, copolyester resin body and grippy, silicone bumper mean this flask can go anywhere. Wide mouth makes for easy filling, pouring and drinking. Hinged top with silicone grip is easy to open and impossible to misplace. Convenient molded graduation marks.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W6B1Z5V |
| Brand | GSI Outdoors |
| Colour | Graphite |
| Item Volume | 10 Fluid Ounces |
| Item Weight | 118 g |
| Item model number | 79346 |
| Manufacturer | GSI Outdoors |
| Model Name | Boulder 10 Flask |
| Net Quantity | 1.0 Count |
| Product Dimensions | 2.8D x 9.4W x 16.5H Centimeters |
| Shape | Rectangular |

## Product Details

- **Brand:** GSI Outdoors
- **Colour:** Graphite
- **Item Volume:** 10 Fluid Ounces
- **Product Dimensions:** 2.8D x 9.4W x 16.5H Centimeters
- **Shape:** Rectangular

## Images

![GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite - Image 1](https://m.media-amazon.com/images/I/31TJkF-hwYL.jpg)
![GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite - Image 2](https://m.media-amazon.com/images/I/41IUhrbMUAL.jpg)
![GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite - Image 3](https://m.media-amazon.com/images/I/41Ox1H8CUsL.jpg)
![GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite - Image 4](https://m.media-amazon.com/images/I/41ctM9FrYXL.jpg)
![GSI Outdoors - Boulder 10 Flask 10 fl. oz, Graphite - Image 5](https://m.media-amazon.com/images/I/41dwRjO01gL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this flask made in China?**
A: It just says imported. I dont see where it says from.

**Q: Is this made of plastic? What kind of plastic? What is the recycle/plastic number on the bottom?**
A: I'm not sure what kind of plastic but its really durable , i haven't had any issue

**Q: Does this have any metal? Will this set off a metal detector?**
A: No metal,

**Q: Is it boa free?**
A: Yes, it is.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***S on 20 September 2024*

Bastante resistente, compacta y ligera. No tiene fugas y se puede guardar hasta en una sudadera por el tamaño.

### ⭐⭐⭐⭐⭐ Review
*by J***9 on 13 June 2023*

The GSI Outdoors Boulder Flask Thermos is a fantastic companion for outdoor enthusiasts and travelers looking to enjoy their favorite beverages on the go. This flask has quickly become my go-to choice for its style, reliability, and impressive thermal performance. First and foremost, the design of the Boulder Flask is sleek and eye-catching. The durable stainless steel construction not only looks great but also ensures long-lasting durability. The textured grip adds a touch of elegance and provides a secure hold, preventing any accidental slips. When it comes to thermal performance, this flask truly shines. The double-wall vacuum insulation keeps my beverages hot or cold for extended periods. Whether I'm sipping on a steaming cup of coffee during a chilly hike or enjoying a refreshing cold drink on a hot summer day, the Boulder Flask consistently delivers on its promise. Another feature that sets this flask apart is its convenient size. With a generous 10-ounce capacity, it strikes the perfect balance between portability and capacity. It easily fits into my backpack or bag without taking up too much space, making it ideal for outdoor adventures or daily commutes. The leak-proof cap ensures worry-free transportation, preventing any spills or leaks. I appreciate the thoughtful design that allows for easy pouring and drinking, thanks to the well-designed spout and integrated cap.

### ⭐⭐⭐⭐⭐ Review
*by A***B on 22 April 2025*

Awesome flask! Seems durable and holds enough to get pretty darn tipsy. Lid seals tight. Pulling it out, unscrewing the lid, flipping the lid back and forth, and screwing the lid back on can be done one handed.

## Frequently Bought Together

- Gsi Outdoors Boulder Flask Thermos,Unisex Adult, Unisex_Adult
- SE Stainless Steel Funnel for Flasks, Small Metal Funnel for Filling Drinking Liquor Flask, Transferring Oil, Juice, Milk, Attached Screw-On Cap

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---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-05*