---
product_id: 115800518
title: "Standard Mouth Lids- Accessory for Standard Mouth Water Bottle"
brand: "hydro flask"
price: "$36"
currency: NZD
in_stock: true
reviews_count: 13
url: https://www.desertcart.nz/products/115800518-standard-mouth-lids-accessory-for-standard-mouth-water-bottle
store_origin: NZ
region: New Zealand
---

# 100% leakproof seal Top-rack dishwasher safe BPA & toxin-free polypropylene Standard Mouth Lids- Accessory for Standard Mouth Water Bottle

**Brand:** hydro flask
**Price:** $36
**Availability:** ✅ In Stock

## Summary

> 💧 Sip smarter, stay hydrated, and never miss a beat with Hydro Flask’s leakproof flex cap!

## Quick Answers

- **What is this?** Standard Mouth Lids- Accessory for Standard Mouth Water Bottle by hydro flask
- **How much does it cost?** $36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/115800518-standard-mouth-lids-accessory-for-standard-mouth-water-bottle)

## 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

- • **Built to Last:** Durable stainless steel pivots ensure smooth strap movement and a lifetime of use.
- • **Health-First Design:** Made from BPA-free, toxin-free materials with easy-to-clean o-ring seals for worry-free hydration.
- • **Effortless Hydration:** Flip-open flex cap lets you sip without unscrewing, boosting your daily water intake.
- • **Universal Compatibility:** Fits all Hydro Flask Standard Mouth bottles—upgrade your bottle without hassle.
- • **Dishwasher Safe Convenience:** Top-rack dishwasher safe for quick, hygienic cleaning that fits your busy lifestyle.

## Overview

The Hydro Flask Standard Mouth Flex Cap is a premium replacement lid designed for all Standard Mouth bottles. Crafted from 100% BPA-free polypropylene with stainless steel pivots, it offers a leakproof, durable, and hygienic hydration solution. Its flip-open design encourages more frequent sipping, while the dishwasher-safe construction ensures effortless cleaning. Backed by a lifetime warranty, this cap is the essential upgrade for active professionals who demand both style and function.

## Description

desertcart.com : Hydro Flask Standard Mouth Flex Cap Black : Sports & Outdoors

Review: Almost Perfect - You can't use it without the straw and you have to use the straws it comes with or it will leak, even if it seams like the same size. But other than that it's a great replacement for the usual cap. I know it sounds simple but I love it because I'm always trying to find ways to get myself to drink more water and the flip straw rather than having to unscrew the cap makes a huge difference in my water intake.
Review: This should be standard on all models. Potential health issues with the plastic lids. - This is exactly how they original lids were designed, then they went to plastic for almost all models. The plastic ones have a thin flat gasket and not an o-ring. It's super hard to get it to come out for cleaning. The plastic ones also are made of two parts that are snapped together in the factory. This is NOT a water-tight seal. So gunk gets inside and is a potential health problem. I drilled a hole in the plastic one and gray goo came out. The entire design of the plastic lids is faulty as cleaning is almost impossible. This, though, is all stainless steel. No seams or ways for water to get inside. It also has a standard o-ring that takes a second to remove and wash. This is also a normal industry-standard size. This is not a knock-off, but made by Hydro Flask/what came on the original model years ago and now is a replacement part. I think they sell one or two models with the stainless steel lid and everything else is plastic. This is a mandatory upgrade that will make your flask last 10-20 years without health issues.

## Features

- Body: 100% polypropylene, swivel: stainless steel
- Imported
- Compatible with all Standard Mouth bottles
- Honeycomb Insulation helps keep cold drinks cold and hot drinks hot
- Durable, stainless steel pivots allow the strap to move easily
- Leakproof
- BPA-Free & Toxin-Free Free from toxins, free from worry.
- Top rack dishwasher safe

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XPN4SFK |
| Age Range (Description) | Adult |
| Base Diameter | 2.32 Inches |
| Best Sellers Rank | #2,645 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #53 in Water Bottle Accessories |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Cap Type | Flex Cap |
| Capacity | 2.5 Pounds |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,003) |
| Date First Available | April 4, 2017 |
| Global Trade Identification Number | 00810497026885 |
| Included Components | Lid |
| Is Dishwasher Safe | Yes |
| Item Dimensions LxWxH | 1.92 x 2.32 x 3.35 inches |
| Item Package Dimensions L x W x H | 5.51 x 3.54 x 2.36 inches |
| Item Weight | 0.01 Pounds |
| Manufacturer | Hydro Flask |
| Material | Polypropylene |
| Model Name | STANDARD FLEX CAP |
| Model Year | 2020 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Weight | 0.08 Kilograms |
| Part Number | SFX001 |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions | 2.32"W x 3.35"H |
| Recommended Uses For Product | Coffee, Tea, Water |
| Size | 40 Ounces |
| Special Feature | Dishwasher Safe, Leakproof |
| Sport Type | Camping/hiking, Cycling, Outdoor lifestyle, Training. |
| Style | Flex Cap |
| Suggested Users | unisex-adult |
| UPC | 810497026885 |
| Warranty Description | LIFETIME |
| With Lid | Yes |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 2.5 Pounds
- **Color:** Black
- **Recommended Uses For Product:** Coffee, Tea, Water
- **Special Feature:** Dishwasher Safe, Leakproof

## Images

![Standard Mouth Lids- Accessory for Standard Mouth Water Bottle - Image 1](https://m.media-amazon.com/images/I/4180q5VrOtL.jpg)

## Available Options

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

## Questions & Answers

**Q: Why so expensive? i can get it cheaper from hydro flask, rei, dick sporting goods, etc.**
A: Sure you can , If dick sporting goods has the same brand and style

**Q: Is this product authentic? Made by Hydroflask?**
A: Hello Robert - Wendy from Tall Ridge here - This Hydro Flask Standard Mouth Insulated Sport Cap purchased from us is authentic. We are an authorized Hydro Flask dealer. Please feel free to check us out. We want you to feel comfortable with your purchase. All Hydro Flask products purchased from us are authentic Hydro Flask products.

**Q: Does this work for the 64 oz growler?**
A: Hello James - Wendy from Tall Ridge here - The Hydro Flask 64 ounce Growler is a Wide Mouth. The Hydro Flask Insulated Sport Cap is for the Standard Mouth bottles only.

**Q: Does it fit a 21 oz?**
A: If the 21 oz bottle you have has a standard opening, not a wide opening, it should fit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Almost Perfect
*by A***D on July 2, 2025*

You can't use it without the straw and you have to use the straws it comes with or it will leak, even if it seams like the same size. But other than that it's a great replacement for the usual cap. I know it sounds simple but I love it because I'm always trying to find ways to get myself to drink more water and the flip straw rather than having to unscrew the cap makes a huge difference in my water intake.

### ⭐⭐⭐⭐⭐ This should be standard on all models. Potential health issues with the plastic lids.
*by J***R on July 8, 2024*

This is exactly how they original lids were designed, then they went to plastic for almost all models. The plastic ones have a thin flat gasket and not an o-ring. It's super hard to get it to come out for cleaning. The plastic ones also are made of two parts that are snapped together in the factory. This is NOT a water-tight seal. So gunk gets inside and is a potential health problem. I drilled a hole in the plastic one and gray goo came out. The entire design of the plastic lids is faulty as cleaning is almost impossible. This, though, is all stainless steel. No seams or ways for water to get inside. It also has a standard o-ring that takes a second to remove and wash. This is also a normal industry-standard size. This is not a knock-off, but made by Hydro Flask/what came on the original model years ago and now is a replacement part. I think they sell one or two models with the stainless steel lid and everything else is plastic. This is a mandatory upgrade that will make your flask last 10-20 years without health issues.

### ⭐⭐⭐⭐⭐ My HydroFlask Finally Has the Lid It Deserves
*by S***N on November 19, 2025*

If you’re anything like me, your water bottle is basically your emotional support accessory — but the original lid? Not always the friendliest when you’re trying to drink on the go or during a Zoom where you’re pretending not to drink on the go. Enter: THIS lid. First, the dust cover is genius. I didn’t know how much I wanted one until I had it. No more mystery crumbs touching the mouthpiece. No more “Did I just sip my own chapstick?” moments. Flip, sip, done. It comes with two long straws you can cut to size (teacher hack: kitchen scissors work great). The handle is soft and flexy, making it easy to loop on a finger when your hands are full — which, let’s be honest, is always. It also fits basically every standard-mouth water bottle ever invented: Hydro Flask, Iron Flask, Simple Modern, Klean Kanteen… if it’s 1.7 inches inside, this thing probably fits it better than my jeans fit me after Thanksgiving. The lid feels durable but not bulky, doesn’t leak, and the flip-top makes it ridiculously easy to use one-handed. Great for workouts, car rides, or just surviving another day of “teacher hydration goals.” Bottom line: If your water bottle needs a glow-up, this is it. Highly recommend.

## 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nz/products/115800518-standard-mouth-lids-accessory-for-standard-mouth-water-bottle](https://www.desertcart.nz/products/115800518-standard-mouth-lids-accessory-for-standard-mouth-water-bottle)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-03*