---
product_id: 641897105
title: "Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue"
brand: "hydro flask"
price: "$45.77"
currency: USD
in_stock: true
reviews_count: 13
category: "Hydro Flask"
url: https://www.desertcart.us/products/641897105-hydro-flask-kids-12-oz-tumbler-with-lid-and-straw
store_origin: US
region: United States of America
---

# Leak-resistant press-in lid with flexible straw Dishwasher safe for effortless cleaning 12 oz capacity keeps drinks cold for hours Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue

**Brand:** hydro flask
**Price:** $45.77
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep their cool, wherever they go!

## Quick Answers

- **What is this?** Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue by hydro flask
- **How much does it cost?** $45.77 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/641897105-hydro-flask-kids-12-oz-tumbler-with-lid-and-straw)

## Best For

- hydro flask enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Safe:** BPA-free stainless steel ensures pure taste and long-lasting use
- • **Cupholder Compatible:** Slim, sleek design fits most cupholders for on-the-go convenience
- • **All-Day Cold Hydration:** Double-wall vacuum insulation locks in chill for hours of refreshment
- • **Kid-Proof Leak Resistance:** Press-in lid with soft, flexible straw minimizes spills during playtime
- • **Parent-Approved Easy Clean:** Fully disassembles and dishwasher safe for hassle-free sanitation

## Overview

The Hydro Flask Kids 12 oz Tumbler in Seaspray Blue features double-wall vacuum insulation to keep drinks cold for hours, a leak-resistant press-in lid with a flexible straw designed for kids, and a cupholder-friendly shape. Made from durable, BPA-free stainless steel, it’s dishwasher safe and built to withstand everyday adventures while maintaining pure taste. Perfect for school, travel, and play, this tumbler combines vibrant style with practical functionality backed by Hydro Flask’s lifetime warranty.

## Description

The Kids Tumbler features a secure Press-In Straw Lid with a soft flexible straw. The colorful Tumbler Boot provides additional protection against bumps and dings as well as a bit of extra stability. Dishwasher safe, toss it in at the end of the day and it’s ready for tomorrow’s adventures.

Review: Love this - This is such a great cup for my little one. I love the silicone straw. Keeps drinks cold for a long time. Is NOT leakproof if turned on side/upside down, but I do not believe it is meant to be. It is great though bc if knocked over, it doesn’t immediately spill everywhere.
Review: Easy to Clean + Hydro Flask Quality = Parent Win - My son was excited about this tumbler because he already loves the book and character, but what made me love it was how practical it is for everyday use. First, it’s by Hydro Flask, so it actually keeps drinks cold (and warm if needed) for hours, which is perfect for long days, school, or being on the go. What really stood out to me, though, is how EASY TO CLEAN. Every part comes apart easily, which makes a big difference when you want to make sure your child’s cup is fully washed and sanitized. I’ve used cups with hard-to-reach areas or pieces that are frustrating to put back together, and this is not that. For us, this was a win because it combines something fun for him with something functional for me. Definitely recommend for parents who want something easy to clean, long-lasting, and kid-approved.

## Features

- 12 OZ KIDS SEASPRAY BLUE TUMBLER CUP: The insulated Hydro Flask Kids 12 oz Tumbler is here to keep hydration close-at-hand. The insulated kids tumbler bottle keeps drinks cold for all-day play. Ages 3+.
- COLD STAYS COLD: Thanks to the double-wall vacuum insulation, drinks stay cold for hours. The TempShield insulation provides cold hydration anytime so their morning fill is the perfect temp. The durable stainless steel delivers pure taste.
- LEAK-RESISTANT: The leak-resistant press-in lid with straw on the insulated Kids Tumbler keeps drinks ready to sip. The Flexible Straw is soft on teeth and easy to flex so they can sip any which way.
- FITS CUPHOLDERS: The cupholder-friendly design means the kids stainless steel water tumbler fits in most cupholders. Designed for seamless cupholder cohabitation, it's right at home as a passenger, on the sidelines, at lunch or wherever they need to set their sips.
- DISHWASHER SAFE: Easy to use and easy to clean, just dissasemble the straw lid and toss it all and the tumbler into the dishwasher. Designed to keep bright color, being dishwasher safe means their favorite Hydro Flask is always ready to go.
- Includes Tumbler Boot
- Fits most cupholders
- Pure taste, no flavor transfer
- Durable stainless steel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJDJ6BVQ |
| Age Range Description | Kid |
| Best Sellers Rank | #10,848 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #124 in Insulated Tumblers |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Capacity | 354 ml |
| Color | SEASPRAY |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 out of 5 stars 343 Reviews |
| Finish Types | Smooth |
| Global Trade Identification Number | 00810096854957 |
| Included Components | Tumbler |
| Item Dimensions W x H | 2.92"W x 8.76"H |
| Item Type Name | Kids Tumbler |
| Item Weight | 240 g |
| Manufacturer | Hydro Flask |
| Manufacturer Part Number | KT12PS363 |
| Manufacturer Warranty Description | LIFETIME |
| Material | Alloy Steel |
| Material Features | Insulated |
| Material Type | Alloy Steel |
| Material Type Free | BPA Free, Plastic Free |
| Model Number | KT12PS363 |
| Number of Items | 1 |
| Occasion | Back To School |
| Other Special Features of the Product | Vacuum Insulated |
| Pattern | Solid |
| Product Care Instructions | Dishwasher Safe |
| Product Style | Modern |
| Recommended Uses For Product | Home, Travel |
| Reusability | Reusable |
| Shape | Round |
| Size | 12 Ounces |
| Special Feature | Vacuum Insulated |
| Specific Uses For Product | Cold Drinks |
| Style | Modern |
| Theme | Ocean |
| UPC | 810096854957 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 354 Milliliters
- **Color:** SEASPRAY
- **Material:** Alloy Steel
- **Special Feature:** Vacuum Insulated

## Images

![Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue - Image 1](https://m.media-amazon.com/images/I/51mObeBElEL.jpg)
![Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue - Image 2](https://m.media-amazon.com/images/I/61UNkgYoIBL.jpg)
![Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue - Image 3](https://m.media-amazon.com/images/I/51jvalc25uL.jpg)
![Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue - Image 4](https://m.media-amazon.com/images/I/51PQ8uI9vlL.jpg)
![Hydro Flask Kids 12 Oz Tumbler with Lid and Straw for School - Insulated Stainless Steel in Seaspray Blue - Image 5](https://m.media-amazon.com/images/I/61xn-qwwRcL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Love this
*by C***K on March 14, 2025*

This is such a great cup for my little one. I love the silicone straw. Keeps drinks cold for a long time. Is NOT leakproof if turned on side/upside down, but I do not believe it is meant to be. It is great though bc if knocked over, it doesn’t immediately spill everywhere.

### ⭐⭐⭐⭐⭐ Easy to Clean + Hydro Flask Quality = Parent Win
*by L***H on March 20, 2026*

My son was excited about this tumbler because he already loves the book and character, but what made me love it was how practical it is for everyday use. First, it’s by Hydro Flask, so it actually keeps drinks cold (and warm if needed) for hours, which is perfect for long days, school, or being on the go. What really stood out to me, though, is how EASY TO CLEAN. Every part comes apart easily, which makes a big difference when you want to make sure your child’s cup is fully washed and sanitized. I’ve used cups with hard-to-reach areas or pieces that are frustrating to put back together, and this is not that. For us, this was a win because it combines something fun for him with something functional for me. Definitely recommend for parents who want something easy to clean, long-lasting, and kid-approved.

### ⭐⭐⭐⭐⭐ Perfect for toddlers
*by J***E on August 10, 2026*

I love this! Perfect for my almost 2 year old

## Frequently Bought Together

- Hydro Flask Kids Tumbler Jr. Stainless Steel Vacuum Insulated Tumbler Cup with Lid and Straw for Cold Water and Drinks for Sports, School, Camp, Lunch
- HYDRO FLASK Kids Water Bottle Jr. Stainless Steel Insulated With Straw Cap for Water, Milk, Juice, School, Camp, Sport, Play and Lunch, Easy to Clean, Leak-Resistant
- Hydro Flask Kids Food Jar Insulated Jr. Food Container for Soup, Noodles, Lunch for School, Camp and Sports Practice with Leakproof Lid for Food

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-17*