---
product_id: 434541510
title: "Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat"
brand: "ergodyne"
price: "¥8140"
currency: JPY
in_stock: false
reviews_count: 1
category: "Ergodyne"
url: https://www.desertcart.jp/products/434541510-ergodyne-skullerz-8945f-x-universal-bump-cap-insert-with-extra
store_origin: JP
region: Japan
---

# Lightweight at just 91g All-over venting for max airflow 35% more crown impact protection Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat

**Brand:** ergodyne
**Price:** ¥8140
**Availability:** ❌ Out of Stock

## Summary

> 🧢 Upgrade your everyday cap into a powerhouse of protection and style!

## Quick Answers

- **What is this?** Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat by ergodyne
- **How much does it cost?** ¥8140 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/434541510-ergodyne-skullerz-8945f-x-universal-bump-cap-insert-with-extra)

## Best For

- ergodyne enthusiasts

## Why This Product

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

## Key Features

- • **Flexible Shielding:** Two-way flex design adapts to your movements, delivering protection that moves with you.
- • **Next-Level Head Safety:** Boost your protection with 35% enhanced crown impact resistance—because minor bumps shouldn’t slow you down.
- • **Featherlight Durability:** Crafted from tough polyethylene, this insert guards without the bulk or weight.
- • **Stay Cool Under Pressure:** Extra venting means superior breathability, keeping you fresh and focused all day long.
- • **Universal Fit, Custom Comfort:** Patented trim-to-fit design molds perfectly into any baseball cap or hat—your style, your rules.

## Overview

The Ergodyne Skullerz 8945F(x) is a lightweight, flexible bump cap insert engineered with a ribbed polyethylene shell that delivers up to 35% more crown impact protection. Featuring all-over venting for maximum breathability and a patented trim-to-fit design, it seamlessly fits into any baseball hat, providing durable, comfortable head protection against bumps and scrapes without compromising style or airflow.

## Description

The next generation of our best-selling Skullerz 8945 Insert, the 8945F(x) Universal Bump Cap Insert with Extra Venting delivers enhanced breathability and up to 35% more crown impact protection. This lightweight and breathable impact-resistant shell easily inserts into any baseball cap, hat or other headwear for protection against bumps, scrapes, bruises and other minor head injuries. With flexible sides and convenient trim-to-fit customization, this bump cap insert easily fits a variety of hats/caps and head shapes. The shell is made of lightweight, durable polyethylene with a ribbed top for stronger crown impact protection. All-over venting maximizes airflow for cool comfort, while an interior foam pad reduces impact without absorbing odors for fresh all-day wear.

Review: Excellent shaper and skull guard - I was sceptical about its shape and utility. But this product is fantastic , maintains shape of my cap and sometimes I use it as skull guard also. I highly recommend this product.

## Features

- NEXT GENERATION BUMP CAP – Improves upon design of best-selling Skullerz 8945 Insert for enhanced breathability and up to 35% more crown impact protection
- LIGHTWEIGHT HEAD PROTECTION – Guards against bumps, scrapes, bruises and other minor head injuries
- ENHANCED IMPACT PROTECTION – Ribbed top improves top-of-head protection by up to 35%
- MAXIMUM BREATHABILITY – All-over venting enhances airflow to keep wearers cool
- POLYETHYLENE SHELL - Durable material resists breaking and cracking
- FITS ANY HAT – Patented “trim-to-fit” design easily adjusts insert height to fit different cap designs
- FLEXIBLE – Horizontal and vertical two-way flex design for protection that is not stiff or bulky

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09D16Q74W |
| Best Sellers Rank | #55,764 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #248 in Caps, Hoods & Hairnets |
| Brand | Ergodyne |
| Brand Name | Ergodyne |
| Closure Type | Insert |
| Colour | Charcoal |
| Customer Reviews | 4.6 out of 5 stars 3,186 Reviews |
| Item Type Name | Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat, Charcoal |
| Item Weight | 91 g |
| League | MMA |
| League Name | MMA |
| Manufacturer | Ergodyne |
| Material Type | Polyethylene |
| Model Number | 8945F(x) |
| Size | Single |
| Style | Protection |
| UPC | 720476234814 |
| Unit Count | 1.0 Count |
| Whats In The Box1 - Whats In The Box3 | 1 bump cap insert |

## Product Details

- **Brand:** Ergodyne
- **Size:** Single
- **Style:** Protection
- **Colour:** Charcoal
- **League:** MMA

## Images

![Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat - Image 1](https://m.media-amazon.com/images/I/71bEewnsZTL.jpg)
![Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat - Image 2](https://m.media-amazon.com/images/I/71LXgS-4C3L.jpg)
![Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat - Image 3](https://m.media-amazon.com/images/I/81rsv0CgrrL.jpg)
![Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat - Image 4](https://m.media-amazon.com/images/I/81YRI+D3eBL.jpg)
![Ergodyne Skullerz 8945F(x) Universal Bump Cap Insert with Extra Venting, Fits Into Any Baseball Hat - Image 5](https://m.media-amazon.com/images/I/71mQs8jY4YL.jpg)

## Questions & Answers

**Q: Where are these manufactured?**
A: Hello, I just finished checking that information for you. The answer is: America!!! Congratulations your in luck I think. It will be on the inside of the bump cap. So, in conclusion, Go ahead and enjoy this American made product today! I know I'm loving mine. Have a great New Year!

**Q: Would this substitute (under a cap) for a skateboard helmet? Regular one's are so bulky and ugly.**
A: No it most certainly will not!   There unfortunately is no less bulky more stylish replacement for a real skateboarding helmet.  Save your brain and just buy a real helmet.

**Q: Does this have the same protection as the all-in-one safety cap?**
A: Thank you for your question. No, this insert is designed to protect against minor head injuries like bumps, scrapes, and bruises.

**Q: how do you wash it?**
A: With a wet rag

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent shaper and skull guard
*by R***S on 30 July 2025*

I was sceptical about its shape and utility. But this product is fantastic , maintains shape of my cap and sometimes I use it as skull guard also. I highly recommend this product.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.jp/products/434541510-ergodyne-skullerz-8945f-x-universal-bump-cap-insert-with-extra](https://www.desertcart.jp/products/434541510-ergodyne-skullerz-8945f-x-universal-bump-cap-insert-with-extra)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-17*