---
product_id: 405399331
title: "KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8\" Metal Tongue Universal, Extension Socket Connecter"
brand: "kastwave"
price: "211 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/405399331-kastwaveseat-belt-extender-and-seat-belt-tensioner-pregnant-woman-car
store_origin: DK
region: Denmark
---

# Easy to Use Versatile Compatibility Guaranteed Safety KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter

**Brand:** kastwave
**Price:** 211 kr
**Availability:** ✅ In Stock

## Summary

> Buckle Up for Comfort! 🚗✨

## Quick Answers

- **What is this?** KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter by kastwave
- **How much does it cost?** 211 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/405399331-kastwaveseat-belt-extender-and-seat-belt-tensioner-pregnant-woman-car)

## Best For

- kastwave enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Engineered to withstand 3500 lbs of tensile force for ultimate peace of mind.
- • **Universal Fit:** Compatible with most car models—check your buckle size and drive with confidence.
- • **Comfort for All:** Perfect for pregnant women and those with limited mobility—no more discomfort!
- • **Convenient Storage:** Ideal for securing large items, making every road trip a breeze.
- • **User-Friendly Design:** Effortlessly install and release with a simple push and press mechanism.

## Overview

The KASTWAVE Seat Belt Extender & Tensioner is a versatile and durable solution designed for enhanced comfort and safety in your vehicle. Made from high-quality materials, it supports a tensile force of 3500 pounds, ensuring reliability for all users, including pregnant women and those with mobility challenges. Its universal compatibility and easy installation make it a must-have accessory for any car owner.

## Description

KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter

## Features

- Versatile Compatibility: This buckle extender is compatible with most car models, tongue width: 7/ 8 inch (21.5 mm) seatbelt buckle hole depth >30 mm. Please double check your buckle size before purchasing.
- Guaranteed Safety: This buckle extender is made of high-quality materials including stainless steel, high strength plastic and polyester. It can withstand 3500 pounds of tensile force. It is also very durable, long-term frequent usage won't affect its safety performance.
- Easy to Use: This belt extender is very easy to install, just push the metal tongue into the original buckle socket and insert your belt buckle tongue into the extended buckle socket. To release just simply press the red button.
- Extra Convenient: This buckle extender is ideal for big people, pregnant women, personnel with equipment, people with limited mobility. It is also ideal for securing large items on your seats.
- Soft and Comfortable: Durable and will not make belly uncomfortable when use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KASTWAVE |
| Brand | KASTWAVE |
| Product Dimensions | 16 x 11 x 4 cm; 360 g |
| Item model number | SSS-666 |
| Manufacturer Part Number | SSS-666 |
| Item Weight | 360 g |

## Images

![KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter - Image 1](https://m.media-amazon.com/images/I/61QvQrCRjEL.jpg)
![KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter - Image 2](https://m.media-amazon.com/images/I/61ZANRNqeCL.jpg)
![KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter - Image 3](https://m.media-amazon.com/images/I/51I4Z6tqb5L.jpg)
![KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter - Image 4](https://m.media-amazon.com/images/I/61ryoZNCDCL.jpg)
![KASTWAVESeat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter - Image 5](https://m.media-amazon.com/images/I/81s1GZM4cML.jpg)

## Frequently Bought Together

- KASTWAVE Seat Belt Extender & Seat Belt Tensioner, Pregnant Woman Car Belt Car Extension 2 PCS, Buckles Extender, 7/8" Metal Tongue Universal, Extension Socket Connecter
- Alteco Super Glue-Gel,3g

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**Shop now:** [https://www.desertcart.dk/products/405399331-kastwaveseat-belt-extender-and-seat-belt-tensioner-pregnant-woman-car](https://www.desertcart.dk/products/405399331-kastwaveseat-belt-extender-and-seat-belt-tensioner-pregnant-woman-car)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-27*