---
product_id: 362873070
title: "Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs"
brand: "grenfu"
price: "¥8894"
currency: JPY
in_stock: true
reviews_count: 5
url: https://www.desertcart.jp/products/362873070-door-knob-safety-cover-for-kids-4-pack-new-shape
store_origin: JP
region: Japan
---

# Eco-friendly durable material Ergonomic oversized grip Childproof lock design Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs

**Brand:** grenfu
**Price:** ¥8894
**Availability:** ✅ In Stock

## Summary

> 🚪 Lock out worry, unlock peace of mind!

## Quick Answers

- **What is this?** Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs by grenfu
- **How much does it cost?** ¥8894 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/362873070-door-knob-safety-cover-for-kids-4-pack-new-shape)

## Best For

- grenfu enthusiasts

## Why This Product

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

## Key Features

- • **Sleek & Protective:** Smooth design protects hands and door knobs while blending with home decor.
- • **Durable & Non-Toxic:** Made from strong, odorless polypropylene fiber for long-lasting safety.
- • **Hassle-Free Installation:** No tools or adhesives needed; adults can easily remove with included keys.
- • **Ergonomic Oversized Design:** Upgraded size fits most spherical knobs, too big for little hands to grasp.
- • **Ultimate Childproof Security:** Prevents toddlers from opening doors to unsafe areas effortlessly.

## Overview

The GRENFU Door Knob Safety Cover (4 Pack) features a new ergonomic design that fits most spherical door knobs, preventing children aged 12 months and up from opening doors to hazardous areas. Made from durable, non-toxic polypropylene fiber, these covers are easy to install without tools or adhesives and can be removed effortlessly by adults, combining safety with convenience and style.

## Description

Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs

## Features

- 【New & Efficient Design】Grenfu's new structure & shape design child proof door knob covers effectively prevents kids from opening doors and getting into dangerous areas such as kitchens, bathrooms and garages. And add the removal holes, which is easy for adults to remove but difficult for children to remove with bare hands.
- 【Upgrade for Bigger Size】GRENFU's new upgraded size door knob covers works well with more spherical door knobs. Difficult for little ones to fully grasp and open with their little hands. Increase the size of the side holes to make it easier for adults to open the door with one hand.
- 【Safety & Eco-Friendly】Made of stronger Polypropylene fiber material, non-toxic, odorless and pollution-free, improves bearing capacity and durability, and extends service life.
- 【Extra Protective Design】 The sleek design does not hurt your hands and protects the door knobs. The soft and natural design blends with your door and home decor.
- 【Easy to Install and Remove】 Easy to install without adhesive or drilling. Simply set it on the door knob and close the two covers, the door knob is in lock to prevent children from grasping. Easy for adults to remove the safety door knob covers with keys and screwdrivers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Model Number | Q-20 |
| Batteries required | No |
| Product Dimensions | 7.11 x 21.08 x 7.11 cm; 140 g |
| Item model number | Q-20 |
| Manufacturer recommended age | 12 months and up |
| Manufacturer | GRENFU |
| Item Weight | 140 g |

## Images

![Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs - Image 1](https://m.media-amazon.com/images/I/6122kwd1JrL.jpg)
![Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs - Image 2](https://m.media-amazon.com/images/I/71fFm3ih8mL.jpg)
![Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs - Image 3](https://m.media-amazon.com/images/I/7178I4buvIL.jpg)
![Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs - Image 4](https://m.media-amazon.com/images/I/71lsNcBEDZL.jpg)
![Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs - Image 5](https://m.media-amazon.com/images/I/61CNjLbLHPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Does exactly what it’s supposed to
  

*by C***T on Reviewed in Canada on 31 May 2024*

Works as should.

### ⭐⭐⭐⭐⭐ 







  
  
    Works great!
  

*by V***Y on Reviewed in the United States on 28 May 2024*

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    Bought these for a few of our doors in the house.Our daughter has learned how to open the doors so this has been useful because it’s definitely baby proof.For an adult or even an 8 year old it’s pretty easy to open.The setup was also very easy

### ⭐⭐⭐⭐⭐ 







  
  
    Does the job
  

*by S***S on Reviewed in the United Kingdom on 4 June 2024*

Looking after an elderly relative with stage 7 dementia and has severe sundowning.used these to limit the rooms he's not meant to go in by himself to make sure he doesn't hurt himself.Seem too big on the door handle but is part of the design, the cover just spins,rather than the door knob turning, deters him from enetering that room.There's openings on the cover for you to be able to grab the door knob to use without removing the cover.Pack of 4 meant we could safeguard him from multiple rooms if we're not with him whilst he wanders.

## Frequently Bought Together

- Door Knob Safety Cover for Kids (4 Pack) New Shape & Structure Design Child Door Knob Covers Prevent Children from Opening Doors Baby Safety Door Knob Locks Fit Most Knobs
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**Shop now:** [https://www.desertcart.jp/products/362873070-door-knob-safety-cover-for-kids-4-pack-new-shape](https://www.desertcart.jp/products/362873070-door-knob-safety-cover-for-kids-4-pack-new-shape)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*