---
product_id: 510450185
title: "Grand 2‑in‑1 Booster Car Seat, Converts from High Back to Belt‑Positioning Booster, Seat for Kids 30–65 Pounds and Belt‑Positioning 40–100 Pounds, High Street"
brand: "safety 1st"
price: "A$371"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/510450185-grand-2-in-1-booster-car-seat-converts-from-high
store_origin: AU
region: Australia
---

# 2-in-1 adaptable design Lightweight 11.35 lbs portability Fits 3 across in most cars Grand 2‑in‑1 Booster Car Seat, Converts from High Back to Belt‑Positioning Booster, Seat for Kids 30–65 Pounds and Belt‑Positioning 40–100 Pounds, High Street

**Brand:** safety 1st
**Price:** A$371
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate every ride with the booster that grows as fast as your family!

## Quick Answers

- **What is this?** Grand 2‑in‑1 Booster Car Seat, Converts from High Back to Belt‑Positioning Booster, Seat for Kids 30–65 Pounds and Belt‑Positioning 40–100 Pounds, High Street by safety 1st
- **How much does it cost?** A$371 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/510450185-grand-2-in-1-booster-car-seat-converts-from-high)

## Best For

- safety 1st enthusiasts

## Why This Product

- Trusted safety 1st brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Mobility:** Lightweight design lets you switch cars in seconds—ideal for on-the-go parents.
- • **Hassle-Free Clean-Up:** Machine washable seat pad and dishwasher-safe cup holders keep your car fresh and tidy.
- • **Maximize Family Rides:** Fits three booster seats side-by-side, perfect for carpools and busy family life.
- • **Grow-With-You Versatility:** Seamlessly transitions from 30-65 lbs harness to 40-100 lbs belt booster—one seat, multiple stages.
- • **Tailored Comfort & Safety:** Adjustable headrest and 5-point harness ensure a perfect fit and secure ride every time.

## Overview

The Safety 1st Grand 2-in-1 Booster Car Seat offers a forward-facing harness for children 30-65 pounds and converts to a belt-positioning booster for kids 40-100 pounds. Designed to fit three across in most vehicles, it’s lightweight for easy portability and features an adjustable headrest for customized support. Its machine washable seat pad and dishwasher-safe cup holders make maintenance simple, making it the perfect versatile car seat solution for growing families.

## Description



## Features

- 2-IN-1 FUNCTIONALITY: This harness booster car seat adapts as your child grows, transforming from a forward-facing car seat with a harness for 30-65 pounds to a belt-positioning booster car seat with back for 40-100 pounds.
- FITS 3 ACROSS: Great for large families or carpools, this 2-in-1 booster car seat for forward-facing with harness and belt-positioning booster with high back is designed to fit three across in the back seat of most vehicles.
- LIGHTWEIGHT & PORTABLE: Easily move this booster car seat from car to car, thanks to its lightweight design, making it ideal for busy, on-the-go families needing versatile booster seats for children 30–100 pounds.
- CUSTOMIZABLE SUPPORT: The adjustable headrest allows for tailored support as your child grows, providing comfort during every ride in this 2-in-booster car seat with a 5-point harness that converts to a belt-positioning high back booster seat.
- EASY TO CLEAN: 2-in-1 booster car seat for forward-facing with harness and belt-positioning booster with high back has a seat pad that is machine washable and dryer safe; two removable cup holders are dishwasher safe.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 29.8 x 19.08 x 18.33 inches |
| Package Weight | 5.28 Kilograms |
| Item Dimensions  LxWxH | 30.19 x 18.25 x 19.63 inches |
| Item Weight | 11.35 Pounds |
| Brand Name | Safety 1st |
| Model Name | Rapid-Dissolving Toilet Paper |
| Color | High Street |
| Material | Polyester |
| Manufacturer | Dorel Juvenile Group |
| Part Number | BC149HAY |
| Style | Car Seat |

## Product Details

- **Brand:** Safety 1st
- **Installation Type:** Latch
- **Material:** Polyester
- **Color:** High Street
- **Orientation:** Forward Facing

## Images

![Grand 2‑in‑1 Booster Car Seat, Converts from High Back to Belt‑Positioning Booster, Seat for Kids 30–65 Pounds and Belt‑Positioning 40–100 Pounds, High Street - Image 1](https://m.media-amazon.com/images/I/81OC52HJMwL.jpg)

## Available Options

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

## Questions & Answers

**Q: Dose this fit 3 across with an infant car seat ?**
A: Hello, thank you for your question. The assembled dimensions are 18.5" W (cup holder to cup holder) x 23.5" D x 28.5" H

**Q: Cual es el peso del producto?**
A: Hola, gracias por tu pregunta. El Grand Booster pesa 11.58 libras

**Q: I have a small coupe is the carseat tall ?**
A: Hello. We do not test for or guarantee fit in any specific vehicle year/make/model at this time, but I can provide you with the dimensions of the car seat so that you can take a look in your vehicle and determine whether this might be a good fit for your vehicle. The assembled dimensions are 18.5" W (cup holder to cup holder) x 23.5" D x 28.5" H .

**Q: Can you fit 3 across in mini van?**
A: Absolutely. I have a GMC Terrain and I had two adults in the back seat along with my grandchild in her car seat

## Customer Reviews

### ⭐⭐⭐⭐⭐ Booster car seat
*by L***  on July 8, 2025*

I absolutely love the Safety 1st Grand 2-in-1 Booster Car Seat! It’s very easy to install, and the seat feels sturdy and secure. The padding is soft and provides great comfort for long car rides. My child loves the bold, stylish color and sits comfortably without any complaints.The transition from harness mode to booster mode is smooth, and I appreciate how lightweight it is—easy to move between vehicles if needed. It also fits well in smaller cars, which is a huge plus.Highly recommend it to any parent looking for a safe, reliable, and affordable car seat that grows with your child!

### ⭐⭐⭐⭐⭐ Great car seat
*by S***A on July 19, 2025*

Great car seat to booster seat. My 4 year old loves it and the cup holders are a bonus. It was easy to install and worth the money.

### ⭐⭐⭐⭐⭐ Safe car seat
*by J***R on June 6, 2025*

Easy to adjust before installing. Easy install. Easy to clean and weight is light to average. Keeps my grandson in a secure seat and he enjoys it.

## Frequently Bought Together

- Safety 1st Grand 2-in-1 Booster Car Seat, Forward Facing Car Seat with Harness, High Back Booster Seat for Car, 30-65 Pounds and Belt-Positioning Booster, Car Seats, 40-100 Pounds, High Street
- lebogner Back Seat Cover For Kids + 3 Pocket Storage Organizer, 2 Pack X-Large Waterproof Kick Mats Backseat Protector, Car Seat Back Protectors For Vehicles To Protect From Dirt, Mud & Scratches

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-11*