---
product_id: 1724449
title: "HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue"
brand: "hyperkewl"
price: "5.51 OMR"
currency: OMR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.om/products/1724449-hyperkewl-6521-evaporative-cooling-hard-hat-liner-blue
store_origin: OM
region: Oman
---

# Imported quality Fits most hard hats 5-10 hrs cooling HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue

**Brand:** hyperkewl
**Price:** 5.51 OMR
**Availability:** ✅ In Stock

## Summary

> Stay Cool, Stay Safe! ❄️

## Quick Answers

- **What is this?** HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue by hyperkewl
- **How much does it cost?** 5.51 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/1724449-hyperkewl-6521-evaporative-cooling-hard-hat-liner-blue)

## Best For

- hyperkewl enthusiasts

## Why This Product

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

## Key Features

- • **Universal Fit:** Easily attaches to most hard hats or bump caps, ensuring you stay safe and cool.
- • **Durable & Reliable:** Crafted from 60% HyperKewl and 40% nylon, built to withstand the rigors of your work environment.
- • **Lightweight Design:** Weighing only 1.23 ounces, it’s so light you’ll forget you’re wearing it.
- • **No Mess, Just Comfort:** Say goodbye to slimy residues and crunchy chemicals—just pure, effective cooling.
- • **Stay Cool Under Pressure:** Experience up to 10 hours of refreshing cooling relief, perfect for those long workdays.

## Overview

The HyperKewl 6521 Evaporative Cooling Hard Hat Liner is a lightweight, innovative cooling solution designed to attach to most hard hats or bump caps. Made from a blend of HyperKewl fabric and nylon, it provides effective cooling for 5-10 hours without any messy residues. Ideal for professionals working in hot environments, this durable liner ensures comfort and safety on the job.

## Description

HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue

## Features

- 60% HyperKewl,40%Nylon
- Imported
- Uses Hyperkewl Fabric to cool for 5-10 hours
- Attaches to most hard hats or bump caps
- No slimy residue or swelling gel or crunchy chemicals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | HyperKewl |
| Part Number | 6521 |
| Item Weight | 1.23 ounces |
| Product Dimensions | 4 x 5 x 0.5 inches |
| Country of Origin | China |
| Item model number | 6521 |
| Is Discontinued By Manufacturer | No |
| Size | One Size |
| Color | Blue |
| Style | Modern |
| Material | Fabric |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 30 day warranty against manufacturer defects |

## Images

![HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue - Image 1](https://m.media-amazon.com/images/I/91RB4B4o3fL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ way better cooling then Terry Cloth Sweat Band liners
*by M***G on April 16, 2015*

fits better on some hard hats then others but offers way better cooling the just regular terry cloth sweat bands

### ⭐ Not very worth it
*by A***R on August 8, 2018*

Doesn’t really hold in too well & in the end seemed like a waste of money for me

### ⭐⭐ Two Stars
*by G***S on July 31, 2017*

Would not work.

## Frequently Bought Together

- HyperKewl 6521 Evaporative Cooling Hard Hat Liner,Blue
- Ergodyne Chill-Its 6665 Evaporative Cooling Vest
- Ergodyne Chill Its 6602 Cooling Towel, Long Lasting Cooling Relief, Gray 29.50" x 13.00"

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**Shop now:** [https://www.desertcart.com.om/products/1724449-hyperkewl-6521-evaporative-cooling-hard-hat-liner-blue](https://www.desertcart.com.om/products/1724449-hyperkewl-6521-evaporative-cooling-hard-hat-liner-blue)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-03-17*