---
product_id: 463695441
title: "Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft)"
brand: "siless"
price: "¥47507"
currency: JPY
in_stock: true
reviews_count: 13
category: "Siless"
url: https://www.desertcart.jp/products/463695441-siless-max-120-mil-3mm-30-sqft-car-sound-deadening
store_origin: JP
region: Japan
---

# 120 mil (3mm) thickness for max dampening 30 sqft coverage for full car application Peel & place easy installation Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft)

**Brand:** siless
**Price:** ¥47507
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence the chaos, amplify the drive.

## Quick Answers

- **What is this?** Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) by siless
- **How much does it cost?** ¥47507 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/463695441-siless-max-120-mil-3mm-30-sqft-car-sound-deadening)

## Best For

- siless enthusiasts

## Why This Product

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

## Key Features

- • **Generous Coverage:** 30 sqft area lets you silence multiple car zones in one pack
- • **Effortless Install:** Peel, place, and hand-roll—no messy adhesives or sprays needed
- • **Ultimate Sound Barrier:** 120 mil thick butyl mat blocks road noise & vibrations like a pro
- • **Value Meets Performance:** Premium quality at a price that won’t break your budget
- • **Advanced Bmastic Formula:** Cutting-edge sound deadening tech for superior noise insulation

## Overview

Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening Mat is a premium butyl-based automotive insulation designed to drastically reduce noise and vibrations. Featuring an advanced Bmastic formula, it offers industrial-grade sound dampening with easy peel-and-place installation. Covering 30 square feet, it’s perfect for car enthusiasts seeking a quieter, more refined driving experience without the premium price tag.

## Description

Buy Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft): Insulation - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Best butyl out there. - If you want the money you're spending on equipment to pay off, you NEED to deaden sound! I've used every major brand and siless is my favorite to work with and the best value for your money, I'm not just adding weight, it's a thermal barrier and reduce outside noise. I turned a 10 year old, base model civic into what feels like a top tier Lexus . Does not offgas, no smell. Super easy to install. Make sure you get a set of rollers! They're required to achieve the advantages of this stuff, it MUST be adhered well and you don't want to tear the interior out twice.
Review: High quality, super sticky, very effective - As long as the surface is thoroughly cleaned, these mats will stick to just about anything. They provide my car with a tremendous amount of sound dampening and have made riding in the car 10 times more enjoyable. I drive a Toyota Yaris and although the engine is built like it's meant to last forever (imagine that), the rest of the car is not of high quality. Which means we used to get A LOT of noise coming from the road, other cars, etc. After I installed these mats which, by the way, I wasn't able to install on every surface I wanted to install them on (due to lack of tools to be able to disassemble certain parts of the interior), the noise coming from outside the car is nearly completely gone. I covered the underside of my hood, the entire interior part of the hatchback, most of the floor in the trunk / spare tire well, and the entire interior side of the doors. The parts I couldn't get to (or didn't want to) were: the ceiling, underneath the driver & passenger seats, behind the dash and the floor for the 2nd row seating. As you can see I left a lot of surfaces untreated with this product AND STILL it blocks most of the sound. To note: people recommended getting the roller tools to help install these mats. I got a few of them in different sizes and they worked O K. Not because of the quality of the tool but because some places you need to install these mats in don't have enough clearance to use the tool. That being said, for the larger surfaces, the roller tools help a lot. Also I found it very beneficial to use aluminum tape while installing these. The tape I used is specifically designed for materials that undergo high temperature changes (like your dryer vents, etc.). This wasn't because the mats were not sticky enough but because there were some places I installed the mats with small gaps between them. I'd also recommend getting some kind of fluffy insulation-type material for large spaces that need noise dampening. Rock wool, for example, worked great for me. As an example, the interior sides of the 2nd row seating walls had large spaces between the plastic interior cover and the metal part of the car wall. I'd install the mats on the metal but was left with 6" - 7" of space between it and the plastic cover. I chose to fill those spots (and spots like it) with insulation which provided EVEN MORE noise dampening.

## Features

- ★ Siless MAX VIBRO 120 mil is ultimate quality sound deadening insulation. Designed for the automotive industry as an industrial sound damping material for applications that need extreme performance, it is well suited to the demanding car enthusiast as well.
- ★ Advanced Formulation - SILESS MAX VIBRO Damping Material consists of newly invented Bmastic, technologically most advanced and efficient sound deadening composition on the market today.
- ★ Value - SILESS VIBRO Damping Material is just priced to be cost effective, when compared to similar products on the market. Car soundproofing does not have to be expensive to work!!
- ★ Ease of Installation — SILESS VIBRO Damping Material is easy to install with a “peel and place” application. Simply trim the pieces to fit, peel and place and hand roll to ensure good adhesion. No messy spray-on paints or adhesives are needed to install this product.
- ★ SILESS VIBRO specifications — Thickness 120 mil/ 0.12 inches/ 3mm, Coverage area - 30 ft². The installation instructions are included in the package but a roller isn't.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Y5BQYGL |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #7,827 in Automotive ( See Top 100 in Automotive ) #18 in Automobile Insulation |
| Coverage | 30 square foot |
| Customer Reviews | 4.7 4.7 out of 5 stars (781) |
| Date First Available | October 16, 2019 |
| Item Package Quantity | 1 |
| Item Weight | 17.74 pounds |
| Item model number | VAR12030MIL |
| Manufacturer | Bema Group Inc. |
| Part Number | VAR12030MIL |
| Product Dimensions | 15.35 x 11.81 x 0.04 inches |
| Size | 30 sqft |
| Style | 30 sqft |
| UPC | 094308950297 |

## Product Details

- **Brand:** Siless
- **Item Thickness:** 0.12 Inches
- **Material:** Rubber
- **Product Dimensions:** 15.35"L x 11.81"W
- **Recommended Uses For Product:** car soundproofing and sound dampening

## Images

![Siless Max 120 mil (3mm) 30 sqft Car Sound Deadening mat - Butyl Automotive Sound Deadener - Noise Insulation and Vibration Dampening Material (30 sqft) - Image 1](https://m.media-amazon.com/images/I/81jJifLYjJL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best butyl out there.
*by C***E on August 10, 2025*

If you want the money you're spending on equipment to pay off, you NEED to deaden sound! I've used every major brand and siless is my favorite to work with and the best value for your money, I'm not just adding weight, it's a thermal barrier and reduce outside noise. I turned a 10 year old, base model civic into what feels like a top tier Lexus . Does not offgas, no smell. Super easy to install. Make sure you get a set of rollers! They're required to achieve the advantages of this stuff, it MUST be adhered well and you don't want to tear the interior out twice.

### ⭐⭐⭐⭐⭐ High quality, super sticky, very effective
*by T***Y on November 25, 2024*

As long as the surface is thoroughly cleaned, these mats will stick to just about anything. They provide my car with a tremendous amount of sound dampening and have made riding in the car 10 times more enjoyable. I drive a Toyota Yaris and although the engine is built like it's meant to last forever (imagine that), the rest of the car is not of high quality. Which means we used to get A LOT of noise coming from the road, other cars, etc. After I installed these mats which, by the way, I wasn't able to install on every surface I wanted to install them on (due to lack of tools to be able to disassemble certain parts of the interior), the noise coming from outside the car is nearly completely gone. I covered the underside of my hood, the entire interior part of the hatchback, most of the floor in the trunk / spare tire well, and the entire interior side of the doors. The parts I couldn't get to (or didn't want to) were: the ceiling, underneath the driver & passenger seats, behind the dash and the floor for the 2nd row seating. As you can see I left a lot of surfaces untreated with this product AND STILL it blocks most of the sound. To note: people recommended getting the roller tools to help install these mats. I got a few of them in different sizes and they worked O K. Not because of the quality of the tool but because some places you need to install these mats in don't have enough clearance to use the tool. That being said, for the larger surfaces, the roller tools help a lot. Also I found it very beneficial to use aluminum tape while installing these. The tape I used is specifically designed for materials that undergo high temperature changes (like your dryer vents, etc.). This wasn't because the mats were not sticky enough but because there were some places I installed the mats with small gaps between them. I'd also recommend getting some kind of fluffy insulation-type material for large spaces that need noise dampening. Rock wool, for example, worked great for me. As an example, the interior sides of the 2nd row seating walls had large spaces between the plastic interior cover and the metal part of the car wall. I'd install the mats on the metal but was left with 6" - 7" of space between it and the plastic cover. I chose to fill those spots (and spots like it) with insulation which provided EVEN MORE noise dampening.

### ⭐⭐⭐⭐⭐ This stuff is great
*by J***M on November 14, 2025*

This stuff is great, Really made a difference under the hood of our motorhome to keep engine noise down. Easy to apply and sticks like glue. Can be cut with scissors.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-28*