---
product_id: 410449600
title: "Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA)"
brand: "zak designs"
price: "฿2522"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/410449600-shells-kelso-tumbler-set-leak-proof-screw-on-lid-straw
store_origin: TH
region: Thailand
---

# Leak-proof valve straw 15 oz plastic & 12 oz steel tumblers BPA-free, reusable materials Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA)

**Brand:** zak designs
**Price:** ฿2522
**Availability:** ✅ In Stock

## Summary

> 🥤 Sip Smart, Spill Less — Hydration That Keeps Up with Your Hustle!

## Quick Answers

- **What is this?** Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA) by zak designs
- **How much does it cost?** ฿2522 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/410449600-shells-kelso-tumbler-set-leak-proof-screw-on-lid-straw)

## Best For

- zak designs enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Chic Hydration:** Reusable, BPA-free design that keeps your kids hydrated sustainably and stylishly.
- • **Spill-Proof Sipping:** Innovative silicone straw valve stops leaks and spills instantly.
- • **Kid-Approved Comfort:** Soft, flexible straws designed for easy sipping and smooth transitions from sippy cups.
- • **Dual-Material Durability:** Choose between lightweight plastic or insulated stainless steel for every adventure.
- • **Dishwasher Safe Convenience:** Top rack dishwasher safe plastic parts for hassle-free cleaning; hand wash steel for longevity.

## Overview

The Zak Designs Shells Kelso Tumbler Set is a 3-piece BPA-free hydration bundle featuring a 15 oz plastic tumbler, a 12 oz double-wall stainless steel tumbler, and an extra sipper with silicone straws. Designed with leak-proof valve straws and durable materials, this set is perfect for kids transitioning from sippy cups, offering spill-proof convenience at home or on the go. Dishwasher safe plastic components and eco-friendly reusable design make it a practical, stylish choice for busy families.

## Description

Zak Designs Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA)

## Features

- MATERIAL: The durable tumblers are made of plastic and stainless steel with silicone straws. Long-lasting and BPA free, the lids and plastic tumbler are top rack dishwasher safe, while the stainless steel tumbler should be hand washed. Do not microwave.
- SIZE: The set contains two tumblers and one additional sipper and straw. The plastic tumbler has a capacity of 15 ounces and the double-wall stainless steel tumbler has a capacity of 12 ounces.
- LEAK-PROOF DESIGN: Each silicone straw has a built-in valve that allows liquid to flow when drinking and prevents accidental spills when the tumbler is tipped over. The straw is also soft and comfortable for kids to drink from.
- AT HOME OR ON THE GO: The straw tumblers are suited for travel, since they won't leak while keeping drinks easily accessible. They're also great for drinking beverages at home without worrying about spilling on papers or electronics.
- LIFESTYLE: Zak Designs drinkware makes hydration a fun part of your daily routine! These cute tumblers are great for kids just graduating from sippy cups. The tumblers are fully reusable--no more disposable cups--and you can choose the material that best suits the situation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Reusability | Reusable |
| Material Type Free | BPA Free |
| Product Care Instructions | Hand Wash Only, Dishwasher Safe |
| Material Features | Reusable, BPA Free, Insulated |
| Material Type | Stainless Steel, Silicone, Plastic |
| Item Weight | 11.36 ounces |
| Number of Items | 3 |
| Item Dimensions W x H | 3.74"W x 6.89"H |
| Unit Count | 1.0 Count |
| Capacity | 15 Fluid Ounces |
| Shape | Round |
| Subject Character | Shell |
| Theme | Jelly Fish, Conch, Underwater, Shells, Fish |
| Occasion | Easter, Christmas, Baby Shower, Birthday, Thanksgiving |
| Color | Shells |
| Style Name | Classic |
| Additional Features | Reusable, BPA Free, Splash-Proof, Additional Straw, Insulated |

## Product Details

- **Brand:** Zak Designs
- **Color:** Shells
- **Special Feature:** Additional Straw, BPA Free, Insulated, Reusable, Splash-Proof
- **Style:** 3 Piece Set
- **Theme:** Conch, Fish, Jelly Fish, Shells, Underwater

## Images

![Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA) - Image 1](https://m.media-amazon.com/images/I/71efOzQUYBL.jpg)

## Available Options

This product comes in different **Color, Size, Style** options.

## Questions & Answers

**Q: Is there a silicone boot that fits the stainless steal cup to prevent dings?**
A: We do not currently make these but are looking at adding in the near future.

**Q: Can i sterilize the plastic cup and its lid in the baby bottle sterilizer?**
A: We are not sure, we have not tested it for this.

**Q: Do you have to bite the straw to get get it to work? Or is it like a typical silicone straw?**
A: You can do it without biting but a little pressure will make a better flow.

**Q: Age group?**
A: These are for 3+.

## Frequently Bought Together

- Zak Designs Shells Kelso Tumbler Set, Leak-Proof Screw-On Lid with Straw, Bundle for Kids Includes Plastic and Stainless Steel Cups with Bonus Sipper (3pc Set, Non-BPA) 15 fl.oz.
- Zak Designs Kelso Tumbler Toddler Cup For Travel or At Home, 12oz Vacuum Insulated Stainless Steel Sippy Cup With Leak-Proof Design is Perfect For Kids (Happy Fruit)

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**Shop now:** [https://www.desertcart.co.th/products/410449600-shells-kelso-tumbler-set-leak-proof-screw-on-lid-straw](https://www.desertcart.co.th/products/410449600-shells-kelso-tumbler-set-leak-proof-screw-on-lid-straw)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-02*