---
product_id: 156916549
title: "Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months"
brand: "sassy"
price: "$U8932"
currency: UYU
in_stock: true
reviews_count: 8
category: "Sassy"
url: https://www.desertcart.uy/products/156916549-sassy-stages-stem-developmental-play-gym-sensory-tummy-time-activity
store_origin: UY
region: Uruguay
---

# 12 milestone-matched toys 6 developmental zones machine washable plush mat Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months

**Brand:** sassy
**Price:** $U8932
**Availability:** ✅ In Stock

## Summary

> 👶 Elevate playtime, master milestones, and never miss a developmental beat!

## Quick Answers

- **What is this?** Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months by sassy
- **How much does it cost?** $U8932 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/156916549-sassy-stages-stem-developmental-play-gym-sensory-tummy-time-activity)

## Best For

- sassy enthusiasts

## Why This Product

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

## Key Features

- • **Milestone-Matched Toys:** 12 interactive, removable toys designed to grow with your baby’s cognitive and sensory milestones.
- • **Portable Play Anywhere:** Detachable toys double as on-the-go entertainment for stroller or car seat adventures.
- • **Ultra Plush & Easy Care:** Soft, padded polyester mat ensures comfort and is machine washable for busy parents.
- • **360° Developmental Play:** Dual arches transform for back & tummy time, promoting full-body motor skills.
- • **Guided Play Instructions:** Built-in, month-by-month tummy time guide empowers caregivers to maximize developmental benefits.

## Overview

The Sassy Stages STEM Developmental Play Gym is a versatile, ultra-plush activity mat designed for babies 0+ months. Featuring 6 developmental zones and 12 milestone-aligned toys, it supports sensory, cognitive, and motor skill growth through guided tummy and back play. Its machine washable fabric and detachable toys offer convenience and portability, making it a trusted, expert-backed choice for early childhood development.

## Description

This is the first tummy time product that actually 'tells mom how to!". It provides instructions to caregivers of how to do tummy time From birth to six months. This versatile mat features two flexible arches that start as a border around the mat for tummy time play and then stretch over baby with dangling toys, encouraging your curious little one to reach and play. The toys detach so you can bring them with in the car seat or stroller for more playtime on the go.

Review: Beautiful - It’s beautiful. I went with this one instead of the more spendy lovevery one I had my eye on. It’s maybe a little smaller but it’s super cute, has many lovely toys and similar color scheme as lovevery and not overly stimulating like some other loud and obnoxious play gyms on the market! I got it half off with open box, I figured if it was messed up I could return it and buy new however it arrived with a little bang up box but was totally perfect and like new inside. It arrived with all the toys and even the sticker to protect the mirror is still on. Very very happy with this purchase and the money I saved. I will add a little pull toy from taf toys that has a color changing light and plays some soothing sounds, add some more toys and contrast flash cards… very happy with this purchase.
Review: Great - Excellent functionality for early STEM skills, with vibrant colors that hold little ones’ attention. Great value for money — sturdy and durable, surviving lots of play without wear. Assembly is super easy, and the pieces have no scent, just a clean, safe feel perfect for babies.

## Features

- Polyester
- Imported
- 2-IN-1 TUMMY TIME MAT & PLAYGYM: A unique new gym with 6 developmental zones designed for back & tummy time play. Arches raise up for 360 back play, designed to help baby develop well rounded body movements. Lower the arches around the mat for tummy time play. With 12 age-appropriate toys & activities, each developmental zone comes with a coordinating toy to match baby's progression by milestone
- 12 ACTIVITIES ENCOURAGE LEARNING THROUGH PLAY: Includes baby safe mirror with back easel for self-discovery, 3 high-contrast attachables: rattle, squeaker & bear plush, removable rainbow chime, textured teether, 4 crinkle flags, 3 textured peek-a-boo flaps, 4 tactile ribbon rings, and a 2-sided pillow prop. Many toys are removable for take-along play
- DEVELOPMENTAL PLAY: Includes a guide printed directly on the mat. separated into 6 developmental zones, provides helpful hints for caregiver regarding what to do and how long to play on tummy, month by month
- EASE & COMFORT: Extra padding in mat provides comforting, secure space for baby to practice tummy time. Machine washable mat for easy cleaning
- PLAY WITH PURPOSE: Sassy Innovates Play with Purpose. For over 30 years Sassy has been dedicated to providing high quality toys and products to engage babies and enhance their development. Having worked with developmental experts nationwide, in the fields of Cognitive, Physical, Emotional and Sensory development, Sassy is driven to provide innovative and trusted solutions to help babies, worldwide, achieve developmental milestones

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VSHJZZQ |
| Batteries required | No |
| Battery type | No batteries required |
| Best Sellers Rank | #30,251 in Baby ( See Top 100 in Baby ) #460 in Baby Gyms & Playmats |
| Care instructions | Machine Wash |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,291) |
| Item Weight | 1 pounds |
| Item model number | 80910AAAM |
| Material Composition | 97% polyester 1% PVC , 1% PVC, 1% satin |
| Material Type | Plastic |
| Number Of Items | 1 |
| Power Source | Manual |
| Product Dimensions | 37 x 37 x 2 inches |
| Pump type | Manual |
| Style | Tummy Time Milestone Activity Playmat |
| Target gender | Unisex |

## Images

![Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months - Image 1](https://m.media-amazon.com/images/I/41Km0gHIw8L.jpg)
![Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months - Image 2](https://m.media-amazon.com/images/I/51-pGg9mMuL.jpg)
![Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months - Image 3](https://m.media-amazon.com/images/I/519c8kt47nL.jpg)
![Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months - Image 4](https://m.media-amazon.com/images/I/51IfeCz5+2L.jpg)
![Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months - Image 5](https://m.media-amazon.com/images/I/51TdrxqlnFL.jpg)

## Questions & Answers

**Q: Is it reversible?**
A: This one is not reversible, just a soft white fabric on the back, but for an extra $10 the one at Buy Buy Baby is and has the months printed on the back for photos.

**Q: How do you get the arches up and crossed? I think I may be missing the piece that attaches them!**
A: There should be a strap in the middle of one of the arches that can be used to wrap the arches together. If not, please contact us at allaboutsassy@sassybaby.com!

**Q: How do you get the arches to form a circular border?**
A: Thanks for reaching out! You can remove the arches from arch position, and place the two poles on the ground. Connect the buckles together on both ends of the poles. Secure one pole in the velcro insert on the mat, and secure the other pole on the other side into the velcro insert. This will form a circular shape around the mat to attach toys to. Enjoy!

**Q: Does it fold/is it portable?**
A: Yes, it folds and it is portable. It’s a beautiful playmat!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Beautiful
*by K***K on March 2, 2024*

It’s beautiful. I went with this one instead of the more spendy lovevery one I had my eye on. It’s maybe a little smaller but it’s super cute, has many lovely toys and similar color scheme as lovevery and not overly stimulating like some other loud and obnoxious play gyms on the market! I got it half off with open box, I figured if it was messed up I could return it and buy new however it arrived with a little bang up box but was totally perfect and like new inside. It arrived with all the toys and even the sticker to protect the mirror is still on. Very very happy with this purchase and the money I saved. I will add a little pull toy from taf toys that has a color changing light and plays some soothing sounds, add some more toys and contrast flash cards… very happy with this purchase.

### ⭐⭐⭐⭐⭐ Great
*by K***M on April 27, 2025*

Excellent functionality for early STEM skills, with vibrant colors that hold little ones’ attention. Great value for money — sturdy and durable, surviving lots of play without wear. Assembly is super easy, and the pieces have no scent, just a clean, safe feel perfect for babies.

### ⭐⭐⭐⭐⭐ Best activity gym for the money
*by L***S on April 17, 2020*

Searched and searched for the perfect activity gym. We also have the firsher price piano activity gym, but liked this one better as it didn’t over stimulate. I loved that it comes with a little pillow to assist with propping baby up for tummy time. The mat is very easy to clean as I just toss it in the washer and hang dry. The attachments are held in place with sturdy Velcro which is nice that you can position toys where you want if you need to get baby to look a certain way because of torticollis or preventing flat spots. Great sensory item that helps baby focus. He loved the high contrast black/white/ red colors. I also loved that it iced you tips and hints on what you should be doing with baby according to their age. Looks simple, but much more educational than others on the market.

## Frequently Bought Together

- Sassy Stages STEM Developmental Play Gym, Sensory Tummy Time Activity Play Mat w/Built-in Instructions, Ultra Plush & Machine Washable Playmat for Babies & Toddlers, 0+ Months
- Sassy Reversible Soft Sensory Activity Panels, 4Count, Ages 0+ Months
- URMYWO Black and White Baby Toys, Tummy Time High Contrast Newborn Toys 0-3 Months, Soft Baby Book, Visual Stimulation Montessori Sensory Infant Toys 0-6-12 Months, Shower Gift for Boys Girls

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-01-25*