---
product_id: 362049182
title: "GSI Outdoors Boulder Flask, Shatter-Resistant, Leakproof Hip Flask with Clear Body & Silicone Grip, BPA-Free Bottle for Hiking, Camping & Travel"
brand: "gsi outdoors"
price: "R$358"
currency: BRL
in_stock: true
reviews_count: 13
category: "Gsi Outdoors"
url: https://www.desertcart.com.br/products/362049182-gsi-outdoors-boulder-flask-shatter-resistant-leakproof-hip-flask-clear
store_origin: BR
region: Brazil
---

# Leakproof hinged silicone cap Clear body with volume markings Shatter-resistant thermoplastic GSI Outdoors Boulder Flask, Shatter-Resistant, Leakproof Hip Flask with Clear Body & Silicone Grip, BPA-Free Bottle for Hiking, Camping & Travel

**Brand:** gsi outdoors
**Price:** R$358
**Availability:** ✅ In Stock

## Summary

> 🥾 Elevate your outdoor style with the Boulder Flask — rugged, reliable, and ready for your next adventure!

## Quick Answers

- **What is this?** GSI Outdoors Boulder Flask, Shatter-Resistant, Leakproof Hip Flask with Clear Body & Silicone Grip, BPA-Free Bottle for Hiking, Camping & Travel by gsi outdoors
- **How much does it cost?** R$358 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/362049182-gsi-outdoors-boulder-flask-shatter-resistant-leakproof-hip-flask-clear)

## 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

- • **Safe & Pure Sips:** BPA-free design guarantees no off-flavors, just clean, crisp refreshment wherever you roam.
- • **Featherlight Freedom:** At just 4 ounces empty, it won’t weigh you down on any hike, commute, or urban escape.
- • **Leak-Free Confidence:** Hinged silicone bumper cap ensures zero spills, keeping your gear dry and your vibe intact.
- • **See-Through Precision:** Transparent body with molded graduation marks lets you track your hydration or spirits on the go.
- • **Adventure-Proof Durability:** Tough thermoplastic resin resists shattering so you can take it anywhere without worry.

## Overview

The GSI Outdoors Boulder Flask is a 6-ounce, BPA-free, shatter-resistant hip flask made from durable thermoplastic resin. Featuring a clear body with volume markings and a leakproof hinged silicone cap, it’s designed for hiking, camping, and travel. Lightweight at just 4 ounces, it combines rugged durability with practical functionality for the modern adventurer.

## Description

desertcart.com : GSI Outdoors, Boulder Flask, Rugged and Shatter-Resistant, Outdoor Hip Flask, Sand, 6 Fluid Ounces : Sports & Outdoors

Review: Great flask!! - This is the best plastic flask I have bought. Highly recommend for the use and the durability. No leak, easy to unscrew the top and easy fill. Fits perfectly in a jacket pocket and not detectable with metal detectors (wink,wink).
Review: Nice flask - Lightweight. High quality. Well-designed lid. Transparent walls make it easy to fill and see the volume.

## Features

- NO METAL: Tough and shatter-resistant, the Boulder Flask can stand up to nearly any outdoor adventure; Thermoplastic resin body keeps your drink of choice intact
- Wide mouth opening makes for easy filling, pouring and drinking; Molded graduation marks help you quickly measure or see what’s left while you’re on the trail.
- See-through design for a fun and novel drinking experience; Hinged top with grippy silicone bumper makes for easier opening, helps prevent leaks and ensures you won’t lose the cap.
- Weighing only 4 ounces empty, the Boulder Flask won’t weigh you down even after you fill it.
- This BPA-free flask is durable, safe to drink from, and doesn’t have any foul or “off” aftertaste.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07YVKXMH3 |
| Best Sellers Rank | #13,018 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #11 in Camping & Hiking Hydration Flasks |
| Brand | GSI Outdoors |
| Brand Name | GSI Outdoors |
| Color | Sand |
| Customer Reviews | 4.5 4.5 out of 5 stars (451) |
| Date First Available | August 5, 2019 |
| Finish Type | Unfinished |
| Global Trade Identification Number | 00090497793431 |
| Included Components | GSI Outdoors 79343 Boulder Flask 6 Oz Sand |
| Item Dimensions LxWxH | 3.94 x 3.94 x 2.36 inches |
| Item Package Dimensions L x W x H | 6.3 x 3.23 x 0.59 inches |
| Item Volume | 6 Fluid Ounces |
| Item Weight | 0.12 Kilograms |
| Manufacturer | GSI Outdoors |
| Material | Plastic |
| Model Name | 79343 |
| Model Year | 2020 |
| Number of Items | 1 |
| Package Weight | 0.09 Kilograms |
| Part Number | 79343 |
| Shape | Rectangular |
| Size | 6 Fluid Ounces |
| Sport Type | Hiking |
| Suggested Users | Unisex |
| UPC | 090497793431 |

## Product Details

- **Brand:** GSI Outdoors
- **Color:** Sand
- **Finish Type:** Unfinished
- **Material:** Plastic
- **Shape:** Rectangular

## Images

![GSI Outdoors Boulder Flask, Shatter-Resistant, Leakproof Hip Flask with Clear Body & Silicone Grip, BPA-Free Bottle for Hiking, Camping & Travel - Image 1](https://m.media-amazon.com/images/I/61kjzYUH5YL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great flask!!
*by K***T on September 6, 2025*

This is the best plastic flask I have bought. Highly recommend for the use and the durability. No leak, easy to unscrew the top and easy fill. Fits perfectly in a jacket pocket and not detectable with metal detectors (wink,wink).

### ⭐⭐⭐⭐⭐ Nice flask
*by A***N on November 5, 2025*

Lightweight. High quality. Well-designed lid. Transparent walls make it easy to fill and see the volume.

### ⭐⭐⭐⭐⭐ Perfect for the golf bag.
*by C***R on December 7, 2025*

Works great, perfect size and no leaks.

## 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
- Stanley Adventure Pre-Party Flask | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free

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**Shop now:** [https://www.desertcart.com.br/products/362049182-gsi-outdoors-boulder-flask-shatter-resistant-leakproof-hip-flask-clear](https://www.desertcart.com.br/products/362049182-gsi-outdoors-boulder-flask-shatter-resistant-leakproof-hip-flask-clear)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-01*