Markwort Weighted Yellow Leather Softball – 5 oz (12WTY) is designed to help athletes build throwing arm strength and reinforce proper mechanics. Sized to a standard 12" circumference, this training ball features an optic yellow leather cover with black stitching for high visibility and a confident grip. Its weighted core delivers progressive resistance, making it ideal for structured throwing programs and warm-up routines.

Use as part of a gradual progression—start lighter and increase weight as your arm adapts. Not for game play.

• Builds throwing arm strength and endurance
• Standard 12" circumference for familiar feel
• Optic yellow leather cover with black stitching
• Weighted core for progressive overload training
• Weight: 5 oz