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Since each brand has its own unique sizing standards, it is advisable to contact the specific manufacturer (e.g., Nike, Adidas) for precise sizing information. They can also assist with gender size conversions. Some trainers include an abbreviation next to the name, indicating a non-traditional men's sizing. For instance, a size 6 in GS differs from a size 6 in Men's.

Common abbreviations include:

(W) - Women

(GS) - Grade School

(PS) - Preschool

(TD) - Toddler

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