---
product_id: 265627228
title: "Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series)"
brand: "mass dynamic"
price: "$137.32"
currency: USD
in_stock: true
reviews_count: 13
category: "Mass Dynamic"
url: https://www.desertcart.us/products/265627228-mass-dynamic-d-shape-toilet-seat-soft-close-loo-seat
store_origin: US
region: United States of America
---

# Soft-close silent mechanism One-button quick release Top-fix install in 5-10 mins Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series)

**Brand:** mass dynamic
**Price:** $137.32
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your throne with silent luxury and effortless hygiene!

## Quick Answers

- **What is this?** Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) by mass dynamic
- **How much does it cost?** $137.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/265627228-mass-dynamic-d-shape-toilet-seat-soft-close-loo-seat)

## Best For

- mass dynamic enthusiasts

## Why This Product

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

## Key Features

- • **Whisper-Quiet Soft Close:** Say goodbye to slamming lids—enjoy smooth, silent closing that’s perfect for late-night peace.
- • **Hygiene at Your Fingertips:** Quick-release button lets you remove the seat instantly for deep cleaning, keeping bacteria at bay and your bathroom fresh.
- • **Effortless Top-Fix Installation:** No more awkward under-pan fiddling—secure your seat in under 10 minutes with a firm, hassle-free grip.
- • **Durable & Stylish Urea-Formaldehyde:** Scratch-resistant, stain-proof surface that stays pristine and supports your modern bathroom aesthetic.
- • **Stable Comfort with Non-Slip Buffers:** Four integrated pads ensure zero wobble, delivering a secure and comfortable seating experience every time.

## Overview

The Mass Dynamic D-Shape Toilet Seat is a premium, UK-standard fit designed for D-shaped pans with adjustable hinges. Crafted from durable urea-formaldehyde, it features a soft-close mechanism to prevent slamming, a quick-release button for easy cleaning, and a top-fix installation system that saves time and effort. Its non-slip buffers ensure stability, making it a practical yet stylish upgrade for any modern bathroom.

## Description

Shop Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series). Free delivery on eligible orders of £20 or more.

Review: Good fit - Marvellous ,good quality and good price.
Review: Overall ok - plastic seat doesn't feel very sturdy, pads don't sit flat to toilet. - First impressions - It doesn't feel as sturdy as my old toilet seat, it's just normal plastic and feels less hard wearing - The top fitting connectors were so simple to install. A massive upgrade from my old underneath fittings which required me to reach under and around to tighten them - There are 4 underneath pads on the seat and the front 2 sit flat to the toilet rim but the back 2 are slightly raised and don't touch the toilet. This could potentially be a problem in future with the seat cracking with the constant use and pressing down on it * - The soft close fitting are what you'd expect. Silent, but slow. Overall ok, some concerns about the plastic quality and the pads not sitting flat to the seat but first few uses have been fine. It has only been used for just a few hours at the time of writing this review so I may come back and update this in a few months. * I used my old toilet seat pads to help with this by trimming down the old pad and then using some bathroom silicone to glue the old pad to the new to create a thicker pad. The back ones now sit flat to the seat but the front ones are marginally higher. It has taken the pressure off the back hinge which should reduce any potentially cracking but I think I will make the front ones slightly thicker using the old pads too so theyre level. I've added pictures to show the difference.

## Features

- Perfect Fit for D-Shaped Pans: Fits UK standard D-shaped pans only with 135–175mm hole distance (adjustable hinges). Dimensions: 460mm (lid) / 445–450mm (seat) length × 360mm width. (Lid slightly longer as it overlaps the seat — please check your pan’s size before purchase.)
- Easy Top-Fix Installation (5–10 mins): Designed for a firm grip and user convenience. Simple top-fixing system means no need to reach under the pan.
- Quick-Release for Hygiene: Press the quick-release button to easily remove the seat for deep cleaning — ensuring better hygiene and reduced bacteria buildup.
- Soft-Close Comfort: Enjoy a smooth, noiseless close every time. The sturdy, soft-close mechanism prevents slamming — perfect for quiet nights.
- Durable Urea-Formaldehyde Material: High-quality, stain- and scratch-resistant surface that won’t fade over time. Four integrated non-slip buffers keep the seat stable with no wobbling.
- In the Box: 1 × D-Shaped White Toilet Seat, 1 × Top Fixing Accessories Set, 1 × User Manual.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Q3GCQKN |
| Best Sellers Rank | 702 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Toilet Seats |
| Brand | MASS DYNAMIC |
| Colour | White |
| Country of Origin | China |
| Customer Reviews | 4.2 4.2 out of 5 stars (4,809) |
| Included Components | 360 Adjustable stainless hinges |
| Item Dimensions L x W | 45L x 36W centimetres |
| Item Type Name | Toilet Seats |
| Item Weight | 2.74 Kilograms |
| Manufacturer | MASS DYNAMIC |
| Material | Duroplast |
| Model Number | 1603.1 |
| Operation Mode | Manual |
| Part Number | 1603.1 |
| Shape | D-Shaped |
| Style | D-Shape Signature |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** MASS DYNAMIC
- **Colour:** White
- **Item weight:** 2.74 Kilograms
- **Manufacturer:** MASS DYNAMIC
- **Material:** Duroplast
- **Operation mode:** Manual
- **Product dimensions:** 45L x 36W centimetres
- **Shape:** D-Shaped
- **Style:** D-Shape Signature

## Images

![Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) - Image 1](https://m.media-amazon.com/images/I/41j3bnLb6AL.jpg)
![Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) - Image 2](https://m.media-amazon.com/images/I/41pPNU37WqL.jpg)
![Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) - Image 3](https://m.media-amazon.com/images/I/61zcXLHbuFL.jpg)
![Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) - Image 4](https://m.media-amazon.com/images/I/61kvTQ-Xp8L.jpg)
![Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series) - Image 5](https://m.media-amazon.com/images/I/61CEr2f9BCL.jpg)

## Available Options

This product comes in different **Number Of Items, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good fit
*by R***Y on 28 February 2026*

Marvellous ,good quality and good price.

### ⭐⭐⭐⭐ Overall ok - plastic seat doesn't feel very sturdy, pads don't sit flat to toilet.
*by G***N on 4 December 2025*

First impressions - It doesn't feel as sturdy as my old toilet seat, it's just normal plastic and feels less hard wearing - The top fitting connectors were so simple to install. A massive upgrade from my old underneath fittings which required me to reach under and around to tighten them - There are 4 underneath pads on the seat and the front 2 sit flat to the toilet rim but the back 2 are slightly raised and don't touch the toilet. This could potentially be a problem in future with the seat cracking with the constant use and pressing down on it * - The soft close fitting are what you'd expect. Silent, but slow. Overall ok, some concerns about the plastic quality and the pads not sitting flat to the seat but first few uses have been fine. It has only been used for just a few hours at the time of writing this review so I may come back and update this in a few months. * I used my old toilet seat pads to help with this by trimming down the old pad and then using some bathroom silicone to glue the old pad to the new to create a thicker pad. The back ones now sit flat to the seat but the front ones are marginally higher. It has taken the pressure off the back hinge which should reduce any potentially cracking but I think I will make the front ones slightly thicker using the old pads too so theyre level. I've added pictures to show the difference.

### ⭐⭐⭐⭐⭐ Very good value
*by A***E on 17 February 2026*

Excellent product easy to fit. Amazing value for the money.

## Frequently Bought Together

- Mass Dynamic D-Shape Toilet Seat, Soft Close Loo Seat with Easy Top Fix, One Button Quick Release for Cleaning, Durable Urea Formaldehyde Material, White (Signature Series)
- Mass Dynamic Square Toilet Seat Soft Close, One Button Quick Release Toilet Seats for Easy Cleaning, Easy Installation with Two Top Fixing Options & Adjustable Hinges, Standard Size (460mm x 360mm)
- Mass Dynamic Soft Close Toilet Seat with Quick Release for Easy Cleaning Loo Seats, Easy Top Fixing White Toilet Seats with Adjustable Hinges, Standard Oval Toilet Seat…

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-23*