---
product_id: 56128697
title: "Weighted Velocity Training Ball Set – Seam & Seamless Options for Pitching & Arm Strength + Set of 6 Balls + Carrying Case"
brand: "grady's pitching school"
price: "¥22107"
currency: JPY
in_stock: true
reviews_count: 13
category: "Grady's Pitching School"
url: https://www.desertcart.jp/products/56128697-weighted-velocity-training-ball-set-seam-and-seamless-options-pitching
store_origin: JP
region: Japan
---

# 6 weighted balls (3.5-32oz) Includes portable carrying case Durability tested for hard throws Weighted Velocity Training Ball Set – Seam & Seamless Options for Pitching & Arm Strength + Set of 6 Balls + Carrying Case

**Brand:** grady's pitching school
**Price:** ¥22107
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your pitching velocity — train smarter, throw harder!

## Quick Answers

- **What is this?** Weighted Velocity Training Ball Set – Seam & Seamless Options for Pitching & Arm Strength + Set of 6 Balls + Carrying Case by grady's pitching school
- **How much does it cost?** ¥22107 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/56128697-weighted-velocity-training-ball-set-seam-and-seamless-options-pitching)

## Best For

- grady's pitching school enthusiasts

## Why This Product

- Trusted grady's pitching school brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durability tested to withstand hard throws against flat surfaces, ensuring long-term training reliability.
- • **Complete Weighted Set:** Six precision-weighted balls from 3.5 to 32 oz for progressive arm strength training.
- • **Inflatable & Adjustable:** Easily inflate balls with a standard needle pump to maintain optimal firmness and feel.
- • **Seam & Seamless Options:** Customize your grip with seam or no-seam balls on key weights for versatile pitching drills.
- • **Portable Training On-the-Go:** Compact carrying case included for effortless transport and training anywhere, anytime.

## Overview

Grady's Pitching School Weighted Velocity Training Ball Set features six durable, inflatable weighted balls ranging from 3.5 to 32 ounces, designed to enhance arm speed and pitching velocity. With seam and seamless options, this set supports versatile training for pitchers of all levels. The included carrying case ensures easy portability, making it perfect for pregame warm-ups, strength training, and recovery. Trusted by athletes worldwide, these balls are built to endure rigorous use and improve performance.

## Description

This soft-shell weighted baseball training set is an excellent tool for both hitting and pitching training. Each set comes with 6 balls that are 32, 21, 14, 7, 5, and 3.5 oz in weight. These balls are popular with pitchers for velocity development and they are excellent for pregame warm-up, pitching practice and training, and post-game recovery. Each set comes with a convenient carrying case. Balls come without seams or with seams on the 14, 7, 5, and 3.5 oz ball) This set is excellent for pitching velocity training. Excellent for pre-game warm-up for all baseball players. May be used for hitting drills and are designed for indoor or outdoor use. Excellent for training in small spaces as they are designed to be thrown against a wall with a smooth surface. A throwing program is not included. When it comes to our customer satisfaction, there is no room for compromise. That is why we rely on top-quality and durable materials that allow us to develop products loved by parents and athletes all over the world. If for some reason you’re not entirely pleased with your purchase, our customer care department has got you covered.

Review: Best yet! - They are better than any others I have ever had & the covers are a lot stronger!
Review: Loved them - Great for workouts

## Features

- SET OF 6 BALLS: The set comes with a 32, 21,14, 7, 5, and 3.5oz ball. Choose from no seams or seams on the 14, 7, 5, and 3.5oz ball.
- DURABILITY TESTED: Each ball can withstand being thrown into a hard, flat surface.
- INCREASE VELOCITY: Training is shown to improve arm speed and increase velocity when used in conjunction with an effective training program.
- CARRYING CASE INCLUDED: Carrying case included with each set.
- EASILY INFLATABLE : Each ball contains an air nozzle to inflate as needed using a standard needle pump.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076MG9T83 |
| Age Range (Description) | All Ages |
| Ball Type | weighted_training_ball |
| Best Sellers Rank | #13,271 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Baseball & Softball Pitching Trainers |
| Brand | Grady's Pitching School |
| Brand Name | Grady's Pitching School |
| Color | Gray, Blue, Green, Yellow, Orange, Red |
| Construction Type | Plastic Molding |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,389) |
| Date First Available | October 20, 2017 |
| Included Components | Carrying Bag |
| Item Diameter | 2.9 Inches |
| Item Dimensions LxWxH | 10 x 3 x 3 inches |
| Item Package Dimensions L x W x H | 10.35 x 7.48 x 4.49 inches |
| Item Weight | 5.2 Pounds |
| League | MLB |
| Manufacturer | Grady's Pitching School |
| Material | Plastic |
| Model Name | Soft-Shell Weighted Ball Training Set |
| Number of Items | 6 |
| Outer Material | Rubber |
| Package Weight | 2.63 Kilograms |
| Recommended Uses For Product | Hand Exercise, Practice b, Strength Training |
| Softball Variation | Fastpitch Softball |
| Sport | Baseball |
| Style | Flats |
| UPC | 868566000403 |
| Unit Count | 6.0 Count |
| Warranty Description | 1 year from the date of purchase |

## Product Details

- **Age Range (Description):** All Ages
- **Brand:** Grady's Pitching School
- **Color:** Gray, Blue, Green, Yellow, Orange, Red
- **Item Weight:** 5.2 Pounds
- **Material:** Plastic

## Images

![Weighted Velocity Training Ball Set – Seam & Seamless Options for Pitching & Arm Strength + Set of 6 Balls + Carrying Case - Image 1](https://m.media-amazon.com/images/I/71-nxAluSFL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this a soft texture? I need something like this for therapeutic purposes.**
A: No. It is a hard rubber texture.

**Q: What is the diameter of the balls?**
A: The red, orange, yellow, and green are about the size of a baseball. The blue is a little bigger and the gray is the size of a softball roughly.

**Q: Can u throw on conctrete wall??**
A: Yes, as long as the surface is smooth. We do not recommend throwing them against cinderblock.

**Q: Can you use this for hitting too?**
A: Yes, they are great tools for hitting training as well as for pitching.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best yet!
*by R***D on December 28, 2025*

They are better than any others I have ever had & the covers are a lot stronger!

### ⭐⭐⭐⭐⭐ Loved them
*by A***R on December 20, 2025*

Great for workouts

### ⭐⭐⭐⭐⭐ Good Option for a Plyo Ball Training Set
*by B***1 on June 5, 2024*

I purchased 2 of these sets of balls for my sons, who are both baseball players that pitch. They're both high school players and wanted to do off-season workouts using weighted balls to build arm strength. There are many options for plyo/weighted balls out there, and this set was reasonably priced and provided the variety in weights that I wanted for their training. Comes with a bag to store the balls, which is a nice convenience. The balls have held up well over the first few months of use. The printing on the balls will fade / chip off quickly, so we wrote the respective ball weight on each ball with a sharpie which has been fine. The bag may rip over time if it's being used to carry balls all over the place. Overall, these are a decent option for a weighted ball set, and I would recommend them over some of the higher priced competing brands on the market.

## Frequently Bought Together

- Plyo Soft Shell Weighted Ball Set 32, 21, 14, 7, 5, and 3.5oz-Pitching/Throwing Velocity Training for Baseball and Softball
- Pocket Radar Ball Coach/Not Compatible with Pocket Radar App

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-16*