---
product_id: 73179876
title: "The Coldest Water Insulated Standard Mouth Size 2.0 - Hydro Sports Straw Cap Flip Top Lid - Multi-Compatible with Standard Flask Mouth Size Stainless Steel Water Bottles"
brand: "the coldest water"
price: "R374"
currency: ZAR
in_stock: true
reviews_count: 8
category: "The Coldest Water"
url: https://www.desertcart.co.za/products/73179876-the-coldest-water-insulated-standard-mouth-size-2-0-hydro
store_origin: ZA
region: South Africa
---

# Optimized straw design for max flow & suction Includes straw cleaner for effortless hygiene Super insulated lid keeps drinks icy cold The Coldest Water Insulated Standard Mouth Size 2.0 - Hydro Sports Straw Cap Flip Top Lid - Multi-Compatible with Standard Flask Mouth Size Stainless Steel Water Bottles

**Brand:** the coldest water
**Price:** R374
**Availability:** ✅ In Stock

## Summary

> ❄️ Sip Smart, Stay Cool — Hydration That Keeps Up With You!

## Quick Answers

- **What is this?** The Coldest Water Insulated Standard Mouth Size 2.0 - Hydro Sports Straw Cap Flip Top Lid - Multi-Compatible with Standard Flask Mouth Size Stainless Steel Water Bottles by the coldest water
- **How much does it cost?** R374 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/73179876-the-coldest-water-insulated-standard-mouth-size-2-0-hydro)

## Best For

- the coldest water enthusiasts

## Why This Product

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

## Key Features

- • **One-Finger Flip & Go:** Ergonomic flip-top lid opens with a single finger—stay focused on your workout, not fumbling with your bottle.
- • **Durable Leak-Proof Design:** Built tough to withstand rough use without leaks, making it the ultimate companion for your active lifestyle.
- • **Hygiene Meets Convenience:** Comes with a dedicated straw cleaner ensuring every sip is fresh and bacteria-free, because your health matters.
- • **Ice-Cold Hydration All Day:** Advanced insulation technology locks in chill for hours, perfect for high-performance athletes and outdoor pros.
- • **Streamlined Sip Experience:** New 2.0 straw cap delivers superior flow rate with smooth suction—no spills, no fuss during your busiest moments.

## Overview

The Coldest Water Insulated Standard Mouth 2.0 Hydro Sports Straw Cap is a premium, multi-compatible lid designed for stainless steel water bottles. Featuring superior insulation, an improved straw flow system, and a soft silicone mouthpiece, it offers leak-proof durability and easy one-finger operation. Ideal for athletes and outdoor enthusiasts seeking reliable, hygienic hydration on the go.

## Description

desertcart.com: Coldest Insulated Standard Mouth Size - Hydro Sports Straw Cap Flip Top Lid - Multi-Compatible with Standard Flask Mouth Size - Black Standard (for 12, 21, Gallon Lids) Standard Mouth : Sports & Outdoors

Review: Takes a beating and doesn’t start leaking - Very sturdy, can take a beating and not start leaking and very easy to clean. No tiny crevices that nothing can reach or get to. Have bought few for our “coldest” water bottles. Got kids? This is worth it
Review: Fits great on the 21oz hydro flask (standard mouth) - I've been using my hydro flask bottle for several months and has been great. However, the regular cap that comes with the bottle makes a lot of noise when opening and closing. It is also a bit tough to drink out of when walking or doing anything active (it'll just spill everywhere). I was looking at the hydro flask sport cap and was turned off by the bad reviews of it leaking. I saw this "The Coldest Water" straw cap as a "frequently purchased" product and saw the good reviews. Decided to give it a try. As usual, desertcart shipping is great and received it in 2 days. I received instructions from the seller on how to cut and insert the straw a day before so I had an idea what to expect. When I received it, i gave it a quick wash (please wash it because the rubber tip has a slight manufacture scent to it, which I expected). I cut the straw to size at an angle. The straw is soft enough to cut but hard enough to last. The package also came with 2 straws as well as a straw cleaner. I inserted the straw into the rubber straw holder on the cap and screw it on my bottle. Immediately, I tried the leak test by turning it upside down, shaking it, etc. No leaks. I've been using it for 2 days now and have not leaked on me. One major "bad" thing I noticed is the tip is a little tight to rotate out to start drinking. There is a little plastic platform where you can use your finger to push down but takes a bit of finesse. I wish there was a mechanism that would allow easier rotation as well as prevent touching the tip with your fingers. Some smaller things I found is there is a loud "suction" sound when you finish your sip but I assume this would be the case for any "suction/straw" caps. Also I noticed I need to suck a little harder when the bottle is full. I wouldn't remove 1-star from the cap from these "issues" though. Still a great cap so far.

## Features

- SUPER INSULATED LID: Athletes, Outdoorsmen, Hikers, Campers,Hunters,Cycling,Soccer,Jogging,Running, Football
- BETTER FLOW - Our newest 2.0 lids have the best suction and flow rate with new and improved design
- EASY CLEAN - Comes with our straw cleaner to get the hard reach places
- COMFORT - soft silicone mouthpiece so you won't chip a tooth while taking a drink during your workout
- EFFORTLESS - Use one finger to flip open the mouthpiece to take a drink

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07CDP4JD7 |
| Best Sellers Rank | #42,573 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #944 in Water Bottle Accessories |
| Brand | The Coldest Water |
| Brand Name | The Coldest Water |
| Color | Black - Standard Mouth |
| Customer Reviews | 4.3 out of 5 stars 2,691 Reviews |
| Finish Type | Polished |
| Finish Types | Polished |
| Included Components | Lid |
| Item Dimensions D x W x H | 2"D x 4"W x 10"H |
| Item Type Name | Lid |
| Item Weight | 0.13 Kilograms |
| Manufacturer | The Coldest Water |
| Material | Plastic |
| Material Type | Plastic |
| Product Dimensions | 2"D x 4"W x 10"H |
| Shape | Round |
| UPC | 857067007271 |
| Unit Count | 1.0 Count |
| Volume | 64 Fluid Ounces |

## Product Details

- **Brand:** The Coldest Water
- **Color:** Black - Standard Mouth
- **Finish Type:** Polished
- **Material:** Plastic
- **Product Dimensions:** 2"D x 4"W x 10"H

## Images

![The Coldest Water Insulated Standard Mouth Size 2.0 - Hydro Sports Straw Cap Flip Top Lid - Multi-Compatible with Standard Flask Mouth Size Stainless Steel Water Bottles - Image 1](https://m.media-amazon.com/images/I/711k+IFiqpL.jpg)

## Available Options

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

## Questions & Answers

**Q: Does it leak?**
A: No it has been 100% leak proof! Mine worked great for a while on my hydroflask. Then the lid broke in half and I can't get the broken part off my water bottle making my hydroflask unusable. Now I have to purchase new bottle... not super happy about that.

**Q: Does it fit a hydroflask 25 oz wine bottle?**
A: I just happened to have the wine hydro flask. I never thought to try. I immediately pulled it out tried it. It dies fit. Thank you for asking so now I know I can sip 25 oz of wine to my hearts content. :)

**Q: Does anyone have a hard time sipping? I feel like the air vent doesn't work in the lid**
A: Yes, they messed up on this design.  There is a little vent behind the spout.  The first version allowed air to pass through.  This new version is completely sealed.  If u puncture it, you will sip fine, but it can leak if tipped over.  The people who say to loosen the cap are just making air to pass through the lid.  If they flip the bottle upside down, it will leak from the lid

**Q: Will this fit a 25 oz s'well bottle?**
A: No, it will not fit a swell bottle

## Customer Reviews

### ⭐⭐⭐⭐⭐ Takes a beating and doesn’t start leaking
*by C***M on August 5, 2025*

Very sturdy, can take a beating and not start leaking and very easy to clean. No tiny crevices that nothing can reach or get to. Have bought few for our “coldest” water bottles. Got kids? This is worth it

### ⭐⭐⭐⭐⭐ Fits great on the 21oz hydro flask (standard mouth)
*by G***G on October 18, 2019*

I've been using my hydro flask bottle for several months and has been great. However, the regular cap that comes with the bottle makes a lot of noise when opening and closing. It is also a bit tough to drink out of when walking or doing anything active (it'll just spill everywhere). I was looking at the hydro flask sport cap and was turned off by the bad reviews of it leaking. I saw this "The Coldest Water" straw cap as a "frequently purchased" product and saw the good reviews. Decided to give it a try. As usual, amazon shipping is great and received it in 2 days. I received instructions from the seller on how to cut and insert the straw a day before so I had an idea what to expect. When I received it, i gave it a quick wash (please wash it because the rubber tip has a slight manufacture scent to it, which I expected). I cut the straw to size at an angle. The straw is soft enough to cut but hard enough to last. The package also came with 2 straws as well as a straw cleaner. I inserted the straw into the rubber straw holder on the cap and screw it on my bottle. Immediately, I tried the leak test by turning it upside down, shaking it, etc. No leaks. I've been using it for 2 days now and have not leaked on me. One major "bad" thing I noticed is the tip is a little tight to rotate out to start drinking. There is a little plastic platform where you can use your finger to push down but takes a bit of finesse. I wish there was a mechanism that would allow easier rotation as well as prevent touching the tip with your fingers. Some smaller things I found is there is a loud "suction" sound when you finish your sip but I assume this would be the case for any "suction/straw" caps. Also I noticed I need to suck a little harder when the bottle is full. I wouldn't remove 1-star from the cap from these "issues" though. Still a great cap so far.

### ⭐⭐⭐⭐⭐ Works great and fair price
*by N***M on November 8, 2023*

Fits perfectly and the color we needed was a very good price. Bought 2 as this piece tends to break from use.

## Frequently Bought Together

- COLDEST Insulated Straw Cap Flip Top Lid - Multi-Compatible with Flask Mouth - Black Standard (for 12/21 Gallon Lids)
- Coldest Insulated Water Bottle with Handle Lid | Leak Proof, Simple Insulated Modern Stainless Steel, Double Walled, Sport Thermos Bottles, Metal Flask | 21oz
- The Coldest Water Bottle Brush - Long Handle 3 in 1 Cleaning Kit for Stainless Steel Water Bottles, Lids, Straws. Tumblers, Coffee Mugs & Baby Bottles - Perfect Cleaner for Narrow Neck Bottles

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**Shop now:** [https://www.desertcart.co.za/products/73179876-the-coldest-water-insulated-standard-mouth-size-2-0-hydro](https://www.desertcart.co.za/products/73179876-the-coldest-water-insulated-standard-mouth-size-2-0-hydro)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-03*