Soft-Shell Weighted Ball Set – 6-Ball Pitching Velocity Trainer (3.5–32 oz)

Train smarter. Throw harder. Built for pitchers who want real velocity gains.

The Soft-Shell Weighted Ball Set with Seams is the plyo training tool we use every day at Grady's Pitching School to build arm speed, mechanics, and durability in pitchers from high school through pro. Six weighted balls in graduated weights from 3.5 oz to 32 oz let you train the full kinetic chain, from connection drills to max-intent throws, without the wear and tear of a regulation baseball.

Why pitchers pick this set:

• Build real velocity. Progressive overload protocol used in pro and college programs to develop arm speed.
• Engraved seams for true ball feel. The 14, 7, 5, and 3.5 oz balls have seams cut into a matte finish so your grip and release mirror a real baseball.
• Soft-shell, no sting. Train indoors, against a wall, or into a sock net without damaging your facility or your hand.
• Improve mechanics and arm health. Heavier balls reinforce connection and intent. Lighter balls accelerate arm speed and clean mechanics.
• Coach-designed. Built by Grady's Pitching School and used daily in our facility.

What's included:

• 6 weighted balls: 3.5, 5, 7, 14, 21, 32 oz
• Engraved seams on the 3.5, 5, 7, and 14 oz balls for a real-baseball grip
• Matte finish for grip and durability
• Drawstring carrying bag
• Inflation-needle compatible (air nozzle on every ball)

Who it's for: Baseball and softball pitchers (ages 13+), coaches, and training facilities looking for a complete, indoor-safe weighted-ball system. For connection and pure heavy-ball work, see the Smooth version.

Built by Coach Grady. 20 years coaching pitchers. Hundreds advanced to college baseball. 10 drafted by MLB organizations. This is the set we put in our own pitchers' hands.

Pair it with a real plan. Weighted balls are a tool, not a program. Coach Grady's Off-Season VIP Program is the protocol we put our pitchers on. Throwing schedule, mechanics breakdowns, weekly progression, the full build.

Specifications

• Number of balls: 6
• Weights: 3.5, 5, 7, 14, 21, 32 oz
• Finish: Engraved seams on 3.5, 5, 7, 14 oz. Matte smooth on 21 and 32 oz
• Material: Soft-shell PVC, iron-sand fill
• Sport: Baseball / Softball
• Color: Multicolor (color-coded by weight)

Frequently asked questions

What ages is this safe for?
We recommend ages 13 and up. Younger arms aren't ready for heavy-ball overload work. For developing players, start with the lightest balls and follow a structured program.

Will heavier balls make me lose arm speed?
No, when used inside a proper protocol. The whole point of overload is to train the body to handle force, then overspeed (lighter balls) teaches the nervous system to throw faster. Skipping the plan is what gets pitchers hurt, not the balls.

Can I throw these into a sock net or off a wall?
Yes. The soft-shell PVC build is designed for indoor training. They take a beating without busting up your facility.

How is this different from the Smooth set?
The Seamed set has engraved seams on the 14, 7, 5, and 3.5 oz balls so your grip and release feel like a regulation baseball. Use it for intent throws, command work, and bullpens. The Smooth set is for connection drills and pure heavy-ball work where grip isn't the variable.

Is this for softball pitchers too?
Yes. Same protocol applies. Softball coaches we work with use the full set.