---
product_id: 540913809
title: "KASTWAVE Double Wall Glass Coffee Mug with Silicone Lid - 12oz Insulated Cup for Hot and Cold Drinks - High Borosilicate Glass Double Walled Cup for Travel and Home Use (Grey)"
brand: "kastwave"
price: "S$27"
currency: SGD
in_stock: true
reviews_count: 4
category: "Kastwave"
url: https://www.desertcart.sg/products/540913809-kastwave-double-wall-glass-coffee-mug-with-silicone-lid-12oz
store_origin: SG
region: Singapore
---

# Leak-proof silicone lid seals perfectly Double wall insulation keeps drinks hot/cold longer Heat-resistant borosilicate glass (-40°F to 300°F) KASTWAVE Double Wall Glass Coffee Mug with Silicone Lid - 12oz Insulated Cup for Hot and Cold Drinks - High Borosilicate Glass Double Walled Cup for Travel and Home Use (Grey)

**Brand:** kastwave
**Price:** S$27
**Availability:** ✅ In Stock

## Summary

> ☕ Elevate your coffee game with insulated elegance!

## Quick Answers

- **What is this?** KASTWAVE Double Wall Glass Coffee Mug with Silicone Lid - 12oz Insulated Cup for Hot and Cold Drinks - High Borosilicate Glass Double Walled Cup for Travel and Home Use (Grey) by kastwave
- **How much does it cost?** S$27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/540913809-kastwave-double-wall-glass-coffee-mug-with-silicone-lid-12oz)

## 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

- • **Eco-Chic & Reusable:** Say goodbye to disposable cups with this sustainable, hand-wash-only beauty
- • **No-Spill Confidence:** Silicone lid with leak-proof seal keeps your drink exactly where it belongs
- • **Sip in Style & Safety:** Double wall design protects your hands while locking in temperature
- • **Durability Meets Design:** Premium lead-free borosilicate glass withstands extreme temps without cracking
- • **Lightweight & Travel-Ready:** Sleek 12oz capacity and modern design fit your on-the-go lifestyle

## Overview

This 12oz double wall glass coffee mug features a heat-resistant, lead-free borosilicate construction and a leak-proof silicone lid, designed to keep beverages hot or cold longer while protecting your hands. Lightweight and stylish, it’s perfect for both travel and home use, combining durability with modern aesthetics.

## Description

Product description

Review: Good - Good
Review: Not bad - The inner seal was not in perfect shape, looks like it was pre-used. Also the grey lid slips off especially if there are hot drinks in the cup because the vapor pushes the lid until it slips away from the mouth part.

## Features

- ☕【Double Wall Insulation】: Our glass coffee mug features a double wall design that keeps your drinks hot or cold for longer, while also preventing your hands from getting burned.
- ☕【Leak-Proof Seal】: The silicone inner plug is made of maternal and child grade material, which is effective in heat preservation and leak-proof, ensuring that your drink stays in the cup and not on your clothes.
- ☕【High-Quality Materials】: Made of heat-resistant lead-free borosilicate glass, our coffee cup is healthy, environmentally friendly, and can withstand sudden temperature changes from -40°F to 300°F.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C58M2MZH |
| Age Range Description | Adult |
| Best Sellers Rank | #6,242 in Kitchen ( See Top 100 in Kitchen ) #87 in Coffee Cups & Mugs |
| Brand | KASTWAVE |
| Brand Name | KASTWAVE |
| Capacity | 340 g |
| Color | 1 |
| Colour | 1 |
| Customer Package Type | FFP |
| Customer Reviews | 4.2 out of 5 stars 19 Reviews |
| Finish Types | Glossy |
| Included Components | Lid |
| Is the item dishwasher safe? | No |
| Item Dimensions W x H | 11W x 17H centimeters |
| Item Type Name | 1 |
| Item Weight | 0.32 Kilograms |
| League Name | no league name |
| Manufacturer | KASTWAVE |
| Manufacturer Part Number | MC4230 |
| Material | Borosilicate Glass , Silicone |
| Material Features | Insulated |
| Material Type | Borosilicate Glass, Silicone |
| Material Type Free | Lead Free |
| Model Number | MC4230 |
| Number of Items | 1 |
| Other Special Features of the Product | Lightweight |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only |
| Product Style | Modern |
| Recommended Uses For Product | Home |
| Reusability | Reusable |
| Shape | Round |
| Size | 11 cm (W) x 17 cm (H) |
| Special features | Lightweight |
| Specific Uses For Product | Cold Drinks, Hot Drinks |
| Style | Modern |
| Subject Character | no subject character |
| Theme | Sports |
| UPC | 755752436576 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** KASTWAVE
- **Capacity:** 340 g
- **Colour:** 1
- **Material:** Borosilicate Glass, Silicone
- **Special features:** Lightweight

## Images

![KASTWAVE Double Wall Glass Coffee Mug with Silicone Lid - 12oz Insulated Cup for Hot and Cold Drinks - High Borosilicate Glass Double Walled Cup for Travel and Home Use (Grey) - Image 1](https://m.media-amazon.com/images/I/71OyIy1ok4L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by S***A on 3 November 2025*

Good

### ⭐⭐⭐ Not bad
*by A***D on 13 November 2025*

The inner seal was not in perfect shape, looks like it was pre-used. Also the grey lid slips off especially if there are hot drinks in the cup because the vapor pushes the lid until it slips away from the mouth part.

### ⭐⭐⭐⭐⭐ Love it
*by E***I on 5 March 2024*

It's a bit bully for my car cup holder, but this doesn't stop me from loving it. It's a big capacity, and surprisingly hold the fluids hot if you keep the lid closed.

## Frequently Bought Together

- KASTWAVE Double Wall Glass Coffee Mug with Silicone Lid - 12oz Insulated Cup for Hot and Cold Drinks - High Borosilicate Glass Double Walled Cup for Travel and Home Use (Grey)
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**Shop now:** [https://www.desertcart.sg/products/540913809-kastwave-double-wall-glass-coffee-mug-with-silicone-lid-12oz](https://www.desertcart.sg/products/540913809-kastwave-double-wall-glass-coffee-mug-with-silicone-lid-12oz)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-09-14*