A4 Size Chart
When shopping for athletic apparel, fit matters just as much as performance. Our A4 size chart is designed to help athletes, teams, and everyday wearers choose clothing that fits comfortably while allowing a full range of motion. This chart will help you up your game whether you're purchasing jerseys for a youth baseball team, performance shirts for training, or team polos for an event, Knowung how A4 sizing works makes the process much easier.
A4 Athletics makes high-performance sportswear used in schools, leagues, and athletic programs across the country. Their apparel is designed with moisture-wicking fabrics, breathable materials, and athletic cuts that let you move freely without restriction. Because their clothing is performance-oriented, choosing the correct size using the official A4 size chart is important for both comfort and functionality.
Understanding the A4 Size Chart
The A4 size chart typically includes measurements for chest, waist, and sometimes hip or inseam, depending on the type of garment. These measurements are assigned to specific clothing sizes such as Youth Small, Adult Medium, or Adult 2XL.
For most A4 tops like performance T-shirts, jerseys, and polos, the most important measurement is the chest measurement. This measurement helps determine how the garment will fit across the upper body and shoulders. To measure the chest correctly, wrap a measuring tape around the fullest part of the chest while keeping the tape level and snug but not tight.
For shorts, pants, and other lower-body apparel, the waist measurement becomes more important. A4 athletic bottoms are often designed with elastic waistbands and drawstrings, which provide some flexibility in fit, but using the size chart will guarantee your clothing will sit comfortably and stay secure during activity.
Youth, Adult, and Women's A4 Sizes
A4 provides separate sizing ranges for youth and adults, making the sizing process much smoother, making it easy for teams and organizations to order gear for athletes of different ages.
Youth sizes generally range from Youth Small to Youth XL and are designed to fit growing athletes in elementary and middle school sports. Youth clothing is made from the same performance fabrics as adult styles, but is tailored for smaller body measurements.
Adult sizes typically start at Adult Small and extend up to 3XL or larger, depending on the style. These sizes are widely used for high school teams, recreational leagues, coaches, and fans.
Some A4 styles also include women’s specific sizing. Women’s sizing is used to make a more tailored athletic fit through the shoulders, waist, and hips. Women’s cuts are designed to maintain performance while offering a shape that feels more natural and comfortable.