---
product_id: 637829861
title: "Hydro Flask Kids 12 Oz Stainless Steel Tumbler with Straw and Boot Seaspray"
brand: "hydro flask"
price: "$51.03"
currency: USD
in_stock: true
reviews_count: 5
category: "Hydro Flask"
url: https://www.desertcart.us/products/637829861-hydro-flask-kids-12-oz-stainless-steel-tumbler-with-straw
store_origin: US
region: United States of America
---

# Cupholder-friendly design fits most car and stroller holders Durable BPA-free stainless steel with protective tumbler boot 12 oz double-wall vacuum insulation keeps drinks cold for hours Hydro Flask Kids 12 Oz Stainless Steel Tumbler with Straw and Boot Seaspray

**Brand:** hydro flask
**Price:** $51.03
**Availability:** ✅ In Stock

## Summary

> 💧 Stay cool, sip smart — the ultimate kids tumbler for every little explorer!

## Quick Answers

- **What is this?** Hydro Flask Kids 12 Oz Stainless Steel Tumbler with Straw and Boot Seaspray by hydro flask
- **How much does it cost?** $51.03 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/637829861-hydro-flask-kids-12-oz-stainless-steel-tumbler-with-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

- • **Effortless Clean-Up 🧼:** Dishwasher safe design means it’s always ready for the next adventure
- • **Kid-Proof Durability 🧴:** Stainless steel body with colorful tumbler boot guards against bumps and drops
- • **Mess-Free Adventures 💧:** Leak-resistant press-in lid keeps spills at bay during every outing
- • **Sip Anywhere, Anytime 🚗:** Flexible, soft straw lid designed for easy sipping from any angle on the go
- • **All-Day Cold Hydration ❄️:** TempShield insulation locks in chill for hours of playtime refreshment

## Overview

The Hydro Flask Kids 12 oz Stainless Steel Tumbler in Seaspray combines double-wall vacuum insulation with a leak-resistant straw lid and a durable protective boot. Designed for kids aged 3 and up, it keeps drinks cold for hours, fits most cupholders, and is dishwasher safe for easy cleaning. BPA-free and built to withstand active lifestyles, it’s the perfect hydration companion for school, travel, and play.

## 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: Biennale - Todo bien
Review: Must-have straw thermos flask for babies/toddlers - One of our baby/toddler must-haves! It doesn’t leak when baby accidentally drops it on the floor. However, liquid does come out if the straw is flicked. Overall, this is a great straw cup/flask for a baby learning to drink from a straw. The straw is soft and flexible!

## Features

- THE KIDS TUMBLER WITH STRAW: 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. The stainless steel tumbler with straw lid can go anywhere, even fitting most cupholders. Cold stays cold, and the flexible straw is easy to sip any which way. 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 at the right temperature. 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. It also includes a fun Tumbler Boot for added durability
- DISHWASHER SAFE: Easy to use and easy to clean, just disassemble 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
- DURABLE CONSTRUCTION: Made from high-quality stainless steel with a colorful protective Tumbler Boot that provides additional protection against bumps and dings while offering extra stability during use
- FLEXIBLE STRAW DESIGN: Features a soft, flexible straw that is gentle on teeth and allows children to drink comfortably from any angle, making hydration easier and more convenient throughout the day

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJDJ6BVQ |
| Age Range Description | Kid |
| Best Sellers Rank | #58,411 in Kitchen ( See Top 100 in Kitchen ) #981 in Insulated Bottles |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Capacity | 354 ml |
| Color | Seaspray |
| Colour | Seaspray |
| Customer Package Type | [Standard Packaging] |
| Customer Reviews | 4.3 out of 5 stars 269 Reviews |
| Finish Types | Matte |
| Global Trade Identification Number | 00810096854957 |
| Included Components | Tumbler |
| Is the item dishwasher safe? | Yes |
| Is the item microwaveable? | No |
| Item Dimensions W x H | 7.4W x 22.3H centimeters |
| Item Type Name | Kids Tumbler |
| Item Weight | 240 Grams |
| Manufacturer | Hydro Flask |
| Manufacturer Part Number | KT12PS363 |
| Material | Stainless Steel |
| Material Features | Insulated |
| Material Type | Stainless 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 | Insulated |
| Pattern | Solid |
| Product Care Instructions | Hand Wash Only, Machine Wash |
| Product Style | Modern |
| Recommended Uses For Product | Home, Travel |
| Reusability | Reusable |
| Shape | Round |
| Size | 1 EA |
| Special features | Insulated |
| Specific Uses For Product | Cold Drinks |
| Style | Modern |
| Theme | Ocean |
| UPC | 810096854957 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Hydro Flask
- **Capacity:** 354 ml
- **Colour:** Seaspray
- **Material:** Stainless Steel
- **Special features:** Insulated

## Images

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

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Biennale
*by J***N on 13 May 2025*

Todo bien

### ⭐⭐⭐⭐⭐ Must-have straw thermos flask for babies/toddlers
*by M***I on 29 April 2026*

One of our baby/toddler must-haves! It doesn’t leak when baby accidentally drops it on the floor. However, liquid does come out if the straw is flicked. Overall, this is a great straw cup/flask for a baby learning to drink from a straw. The straw is soft and flexible!

### ⭐⭐⭐⭐⭐ Expensive but reflects the quality of the product
*by B***R on 21 July 2025*

Expensive but very good quality and functional, my son loves it.

## 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: 2026-09-25*