---
product_id: 487801078
title: "SF3"
brand: "sonicfoam"
price: "NT$1048"
currency: TWD
in_stock: true
reviews_count: 13
category: "Sonicfoam"
url: https://www.desertcart.tw/products/487801078-sf3
store_origin: TW
region: Taiwan
---

# Perfect fit for 3.3-4.3mm earbuds Up to 4 weeks of premium comfort Eco-friendly degradable memory foam SF3

**Brand:** sonicfoam
**Price:** NT$1048
**Availability:** ✅ In Stock

## Summary

> 🎧 Elevate your earbuds with SONICFOAM — where comfort meets crystal-clear sound!

## Quick Answers

- **What is this?** SF3 by sonicfoam
- **How much does it cost?** NT$1048 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/487801078-sf3)

## Best For

- sonicfoam enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Size Options:** Available in Small, Medium, and Large to tailor your fit and maximize noise isolation and sound clarity.
- • **Sustainable Sound Upgrade:** Made from degradable memory foam, each pair delivers up to 4 weeks of eco-conscious, high-performance use.
- • **All-Day Comfort, No Compromise:** Soft memory foam expands perfectly to your ear canal, ensuring a snug fit that stays put without irritation.
- • **Precision Fit for Ultimate Sound:** Designed specifically for earbuds with 3.3-4.3mm speaker diameter to lock in crisp, immersive audio.
- • **Bulk Pack for Continuous Enjoyment:** 20 tips (10 pairs) mean you’re always ready with fresh, hygienic earbud upgrades—never miss a beat.

## Overview

SONICFOAM SF3 Medium Black earbud tips are precision-engineered memory foam accessories designed for earbuds with 3.3-4.3mm speaker diameters. Each pack includes 10 pairs of eco-friendly, degradable foam tips that expand to provide a secure, comfortable fit and enhanced sound isolation for up to 4 weeks of use. Available in multiple sizes, these tips upgrade your audio experience with lasting comfort and superior noise blocking.

## Description

desertcart.com: SONICFOAM (SF3 Medium Black) Memory Foam Earbud Tips for Earbuds with Speaker Diameter 3.3-4.3mm - (20 Pack / 10 Pairs) : Electronics

Review: Too Short for Otto NoizeBarrier Micro - I bought these because of the great reviews and the price per set. The reviews are true. They feel like good quality foam earbud tips. I like how soft and comfortable they are. They spring back relatively quickly. I did buy these with the purpose of trying to have them as tips for Otto Noize Barrier Micro Hearing Protection buds. These unfortunately aren't the correct length, but do fit on the stems. I will keep em just in case since I'm sure they work, even if just slightly short. Took one for the team for those of us competition shooters looking for alternatives lol.
Review: Steelseries Arctis Gamebuds - 2nd review. The 1st set I ordered didnt fit my Steelseries Arctis Gamebuds. The SF3 did, and I very happy with thier fit, and how much better my gamebuds feel in my ear. Much more snug, don't feel like they want to wiggle loose at all. ONLY complaint, medium won't allow the buds to hit the charge prongs, so you'll have to use a rubber band or something to hold the lid closed, and then they'll charge. Kinda wish I'd went with small, and maybe not have this issue. I'd recommend these tips, would order them again, and their customer service was super helpful when I ordered the wrong size.

## Features

- A revolution in sound performance, with foam that expands at the perfect rate.
- Enjoy crisp, clear sound and comfort for an all-day immersive experience.
- Memory foam is a degradable material; each pair should last up to 4 weeks.
- Designed specifically for earbuds with a speaker diameter of between 3.3 - 4.3mm
- Available Sizes: Small, Medium, Large | Eartip Dimensions: S=11mm wide / M=12mm wide / L=13mm wide / Height for all sizes 10mm (Dimensions indicated are approximate and may differ slightly)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09L7DNTTT |
| Best Sellers Rank | #30,439 in Electronics ( See Top 100 in Electronics ) #995 in Headphone Earpads |
| Customer Reviews | 4.5 4.5 out of 5 stars (193) |
| Date First Available | June 2, 2022 |
| EU Spare Part Availability Duration | 10 Months |
| Item Weight | 1.41 ounces |
| Item model number | SF3 (see model list) / Medium (Ear size) |
| Manufacturer | SONICFOAM |
| Product Dimensions | 0.47 x 0.47 x 0.39 inches |
| Unit Count | 10.0 Count |

## Product Details

- **Brand:** SONICFOAM
- **Color:** SF3 - Black
- **Compatible Devices:** with SF3: Various Earphones - (See Compatibility List)
- **Item dimensions L x W x H:** 0.47 x 0.47 x 0.39 inches
- **Material:** Hypoallergenic Polyurethane Memory Foam

## Images

![SF3 - Image 1](https://m.media-amazon.com/images/I/616MYGjW9IL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Too Short for Otto NoizeBarrier Micro
*by I***E on July 19, 2025*

I bought these because of the great reviews and the price per set. The reviews are true. They feel like good quality foam earbud tips. I like how soft and comfortable they are. They spring back relatively quickly. I did buy these with the purpose of trying to have them as tips for Otto Noize Barrier Micro Hearing Protection buds. These unfortunately aren't the correct length, but do fit on the stems. I will keep em just in case since I'm sure they work, even if just slightly short. Took one for the team for those of us competition shooters looking for alternatives lol.

### ⭐⭐⭐⭐⭐ Steelseries Arctis Gamebuds
*by M***T on January 22, 2026*

2nd review. The 1st set I ordered didnt fit my Steelseries Arctis Gamebuds. The SF3 did, and I very happy with thier fit, and how much better my gamebuds feel in my ear. Much more snug, don't feel like they want to wiggle loose at all. ONLY complaint, medium won't allow the buds to hit the charge prongs, so you'll have to use a rubber band or something to hold the lid closed, and then they'll charge. Kinda wish I'd went with small, and maybe not have this issue. I'd recommend these tips, would order them again, and their customer service was super helpful when I ordered the wrong size.

### ⭐⭐⭐⭐⭐ Fits Shure and ADV Audio IEM
*by T***R on July 27, 2024*

Perfect fit for Shure, ADV Audio, and similar IEM with a small speaker opening of 3.3mm. These are a great fit at 3mm. Memory foam is soft and aids sound quality. A much better option for longer listening than denser foam. Best option for the quality, price, and quantity. Plus the case they come in is really convenient. Great care in packaging.

## Frequently Bought Together

- SONICFOAM Memory Foam Earbud Tips - Premium Noise Isolation, Replacement Foam Earphone Tips, 20 Pack for in Ear Headphone Earbuds (SF3 Medium, Black)
- Shure SE215 PRO Wired Earbuds - Professional Sound Isolating Earphones, Clear Sound & Deep Bass, Single Dynamic MicroDriver, Secure Fit in Ear Monitor, Plus Carrying Case & Fit Kit - Clear (SE215-CL)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tw/products/487801078-sf3](https://www.desertcart.tw/products/487801078-sf3)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-02-07*