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How to Decorate Softball Jerseys

Decorating made easy.

Learn what size numbers and letters to use for decorating softball jerseys for both youth and adult leagues.

  • Jersey Fabric: Medium weight moisture wicking cool mesh polyester
  • Heat Transfer Material: Thermo-FILM® (blocks dye migration)
  • Application: Thermo-FILM: 330°F for 6-8 seconds with medium pressure (#4)

Letter & Number Product Recommendation:

  • Pre-Cut Numbers - most cost effective, available in 1 or 2-color
  • Pre-Spaced Text - pre-aligned on carrier for easy placement, available in 1 or 2-color


  • Thermo-FILM is the best material for blocking dye migration
  • Use a layout board to help with alignment when using pre-cuts
  • Leagues may decide if names will be displayed on the backs of the uniforms
  • Varsity and Pro Block are the most popular fonts

Common Letter and Number Sizes

How to Decorate Softball Jerseys -  Front How to Decorate Softball Jerseys - Back
Youth Size Adult Size
Name 2" 3"
Front Number 3" 4"
Back Number 6" 8"

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