---
product_id: 70700139
title: "Flex Cap for Standrd Mouth - Leak Proof - Honeycomb Insulation Cap with Flex Strap for Easy Carrying - Black"
brand: "hydro flask"
price: "2667 kr"
currency: ISK
in_stock: true
reviews_count: 13
category: "Hydro Flask"
url: https://www.desertcart.is/products/70700139-flex-cap-for-standrd-mouth-leak-proof-honeycomb-insulation-cap
store_origin: IS
region: Iceland
---

# Leakproof seal for zero spills Keeps drinks cold for 24 hours Dishwasher safe for effortless cleaning Flex Cap for Standrd Mouth - Leak Proof - Honeycomb Insulation Cap with Flex Strap for Easy Carrying - Black

**Brand:** hydro flask
**Price:** 2667 kr
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, leak less, and carry on with Hydro Flask Flex Cap!

## Quick Answers

- **What is this?** Flex Cap for Standrd Mouth - Leak Proof - Honeycomb Insulation Cap with Flex Strap for Easy Carrying - Black by hydro flask
- **How much does it cost?** 2667 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/70700139-flex-cap-for-standrd-mouth-leak-proof-honeycomb-insulation-cap)

## Best For

- hydro flask enthusiasts

## Why This Product

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

## Key Features

- • **Universal Fit:** Designed to perfectly fit 18oz, 21oz, and 24oz Hydro Flask standard mouth bottles
- • **24-Hour Chill Power:** Honeycomb insulation locks in cold for all-day refreshment
- • **Lifetime Durability:** Backed by Hydro Flask’s lifetime warranty, built to last through every adventure
- • **Leakproof Confidence:** Secure seal means no drips, no mess—carry it anywhere worry-free
- • **Effortless Maintenance:** Dishwasher safe materials make cleaning a breeze—stay fresh without the hassle

## Overview

The Hydro Flask Flex Cap is a leakproof, honeycomb-insulated lid designed for standard mouth bottles (18oz, 21oz, 24oz). It keeps beverages cold for up to 24 hours, fits securely to prevent spills, and is dishwasher safe for easy cleaning. Crafted from durable, BPA-free materials and backed by a lifetime warranty, this cap combines practical performance with sleek portability.

## Description

Shop at desertcart.co.uk for Hydro Flask - Flex Cap for Standrd Mouth - Leak Proof - Honeycomb Insulation Cap with Flex Strap for Easy Carrying - Black : Sports & Outdoors.

Review: Dishwasher safe now leaks - No leak and dishwasher safe baught my first flex straw with my first hydro flask in 2023 .Can't fault it best drinks bottle I have ever had still going strong but needed another because I use it constant and it never gets washed so decided to purchase another and the colour moonshine I wanted wasn't available with the straw lid so happy to purchase another .A bit expensive way if doing it but I know its going to be going strong in years to come .
Review: Lovely product - Perfect size for my 621ml water bottle. The straw is easy to adjust/cut to size. No spill at all as the cap is totally sealed. Love this purchase.

## Features

- COLD DRINKS FOR 24 HOURS: The honeycomb-insulated Cap keeps beverages at the ideal temperature for hours. Enjoy cold refreshments for up to 24 hours.
- COMPATIBILITY: Try it with our standard opening bottles [18 oz (532 ml), 21 oz (621 ml), 24 oz (709 ml)] for a perfect fit and an enhanced drinking experience
- LEAKPROOF WHEN CLOSED: Say goodbye to drips and leaks with this cap's leakproof design, ensuring your beverage stays where it should
- DISHWASHER SAFE: Made from materials for drink safety, this lid is also dishwasher safe for easy cleaning
- SATISFACTION GUARANTEED: We offer a lif etime warranty against manufacturer defects. HYDRO FLASK stands behind our durable and robust materials and is committed to high standards.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XPN4SFK |
| Anti-Tick Material | Body: 100% polypropylene, swivel: stainless steel |
| Batteries required | No |
| Best Sellers Rank | 3,709 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 247 in Canteens & Water Bottles |
| Care instructions | Dishwasher Safe |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,419) |
| Date First Available | 23 Mar. 2017 |
| Dishwasher safe? | Yes |
| Fabric Type | Body: 100% Polypropylene, Swivel: Stainless Steel |
| Import designation | Imported |
| Included components | Bottle lid. |
| Is assembly required | No |
| Is mould resistant | BPA Free |
| Item model number | SFX001 |
| Item weight | 0.01 Pounds |
| Number of pieces | 1 |
| Product Dimensions | 4.88 x 5.9 x 8.52 cm; 3.95 g |
| Warranty description | Hydro flask lifetime warranty. |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 1.13 kg
- **Colour:** Black
- **Recommended uses for product:** Tee
- **Special feature:** Cold 24 Hours, Dishwasher Safe, Leak

## Images

![Flex Cap for Standrd Mouth - Leak Proof - Honeycomb Insulation Cap with Flex Strap for Easy Carrying - Black - Image 1](https://m.media-amazon.com/images/I/61xLVY6SRwL.jpg)

## Questions & Answers

**Q: does this fit 30oZ bottle?**
A: If it has the standard opening then yes it will fit perfectly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Dishwasher safe now leaks
*by A***R on 6 November 2025*

No leak and dishwasher safe baught my first flex straw with my first hydro flask in 2023 .Can't fault it best drinks bottle I have ever had still going strong but needed another because I use it constant and it never gets washed so decided to purchase another and the colour moonshine I wanted wasn't available with the straw lid so happy to purchase another .A bit expensive way if doing it but I know its going to be going strong in years to come .

### ⭐⭐⭐⭐⭐ Lovely product
*by M***E on 6 June 2025*

Perfect size for my 621ml water bottle. The straw is easy to adjust/cut to size. No spill at all as the cap is totally sealed. Love this purchase.

### ⭐⭐⭐⭐⭐ Perfect sports top for hydroflask
*by M***E on 8 September 2025*

Works great, fits hydroflask and is leak proof.

## Frequently Bought Together

- Hydro Flask Standard Mouth Lids- Accessory for Standard Mouth Water Bottle
- Auto Flip Lid for Hydro Flask Standard Mouth Bottle, Spout lid for Iron Flask, Fits for Simple Modern and Most Brands, Replacement Lid with Button Lock, Black
- Hydro Flask Flex Boot - Accessory Silicone Water Bottle Protector - Dishwasher Safe, BPA-Free, Non-Toxic Small

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**Shop now:** [https://www.desertcart.is/products/70700139-flex-cap-for-standrd-mouth-leak-proof-honeycomb-insulation-cap](https://www.desertcart.is/products/70700139-flex-cap-for-standrd-mouth-leak-proof-honeycomb-insulation-cap)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-20*