Measuring up

Hat Sizing

How to Measure Your Head for Baseball Caps (Including Flexfit and Infinity Her)

Finding the perfect baseball cap—whether fitted, snapback, Flexfit from brands like Richardson, Yupoong (Flexfit), Decky, or women-specific Infinity Her—starts with an accurate head measurement. This guide provides step-by-step instructions for men, women, youth, and babies, ensuring a comfortable fit for all. Follow these steps and refer to brand-specific sizing charts to select the right cap, with special attention to Infinity Her’s women-focused features like the Evolve™ ponytail opening and Elude™ makeup-resistant sweatband.

Tools Needed

  • Flexible measuring tape (or a piece of string and a ruler)

  • A mirror (optional, for self-measurement)

  • A friend (optional, for assistance)

Step-by-Step Measurement Process

1. Prepare Your Tools

Ensure you have a flexible measuring tape. If you don’t have one, use a non-stretchy string (like a shoelace) and a ruler to measure the string length afterward.

2. Position the Measuring Tape

Place the measuring tape around your head, about 0.5 inches (1 cm) above your eyebrows and ears, where the cap’s sweatband will rest. This is typically the widest part of your head. Ensure the tape is straight and not twisted.

3. Measure Your Head Circumference

Wrap the tape snugly but not tightly around your head. Note the measurement in inches or centimeters where the tape overlaps. If using a string, mark where it overlaps, then measure the string against a ruler.

4. Record and Repeat

Write down the measurement. For accuracy, measure two or three times and take the average if there’s variation. If you’re between sizes, round up for fitted or Flexfit caps to avoid a tight fit.

5. Compare to Brand Sizing Charts

Use your measurement to find the correct cap size using brand-specific charts. Below are sizing references for Richardson, Yupoong (Flexfit), Decky, and Infinity Her caps.

Brand-Specific Sizing Charts

Richardson Caps

  • Fitted Caps: Sizes range from 6 3/8 to 8, measured in 1/8-inch increments.

    • Example: 22 inches = Size 7, 23 1/8 inches = Size 7 3/8.

  • R-Flex (Stretch-Fit): Available in XS-SM (20 3/4–21 5/8 inches), SM-MD (21 5/8–22 3/8 inches), LG-XL (22 3/4–24 5/8 inches).

  • Youth Fitted (PTS20): Approximately 20–21 inches (sizes 6 3/8–6 7/8).

  • Snapbacks: One Size Fits Most (adjustable, typically 21–24 inches).

Yupoong (Including Flexfit) Caps

  • Fitted Caps: Sizes 6 3/8 to 8 (20–24 inches).

  • Flexfit Caps: Feature a stretchable elastic sweatband. Available in:

    • XS/S (20 3/4–21 1/2 inches, sizes 6 5/8–6 7/8).

    • S/M (21 1/8–22 3/8 inches, sizes 6 7/8–7 1/8).

    • L/XL (22 3/8–23 5/8 inches, sizes 7 1/8–7 5/8).

    • XL/XXL (23 1/8–24 3/8 inches, sizes 7 3/8–7 7/8).

  • Snapbacks (YP Classics): One Size Fits Most (adjustable, typically 21–24 inches).

  • Youth Sizes: Approximately 20–21 inches (6 3/8–6 7/8), available in Flexfit and snapback styles.

Decky Caps

  • Fitted Caps: Sizes 6 3/4 to 7 3/4 (21 1/4–24 1/4 inches).

  • Snapbacks: One Size Fits Most (adjustable, typically 21–24 inches).

  • Youth/Baby Sizes: Limited youth options, typically 19–21 inches for adjustable snapbacks.

Infinity Her Caps (Women-Specific)

  • Adjustable Caps: Most Infinity Her caps (e.g., Hattie, Charlie, Janet) are One Size Fits Most, fitting head circumferences of approximately 21–22 1/2 inches, with adjustable closures (e.g., antique brass tri-glide buckle or plastic snapback).

  • Features: Designed for women with narrower crowns for better fit, Evolve™ concealed ponytail opening (high/low options), and Elude™ makeup-resistant, breathable, wicking sweatband to prevent makeup stains.

  • Styles: Include modern trucker, pigment-dyed, denim mesh back, and fashion print caps, often with patterned undervisors and seam tape.

  • Youth Sizes: Limited options, typically adjustable for 19–21 inches, suitable for older children or teens.

Note: Snapback and adjustable caps (including Infinity Her) offer flexibility for most head sizes (21–24 inches for adults, 19–21 inches for youth/babies). Fitted and Flexfit caps require precise measurements; round up if between sizes. Flexfit caps have a stretchable sweatband (1/4–1/2 inch give), while Infinity Her’s narrower crowns and adjustable closures cater specifically to women’s head shapes.

Considerations for Different Demographics

Men

  • Average head size: 22–23 inches (sizes 7–7 3/8).

  • Choose fitted or Flexfit caps for a snug look or snapbacks for adjustability. Richardson and Yupoong Flexfit L/XL sizes suit larger heads, while Flexfit’s stretch accommodates varied shapes.

 

Women

  • Average head size: 21 1/2–22 1/2 inches (sizes 6 7/8–7 1/8).

  • Infinity Her caps are ideal, with adjustable closures and features like the Evolve™ ponytail opening (concealed to look like a regular cap when hair is down) and Elude™ sweatband for makeup wearers. Flexfit XS/S or S/M sizes from Yupoong and Decky snapbacks with ponytail slots are also great.

 

Youth (Ages 6–12)

  • Average head size: 20–21 inches (sizes 6 3/8–6 7/8).

  • Yupoong Flexfit youth sizes, Richardson PTS20, or Infinity Her adjustable caps (for older children) are ideal. Snapbacks accommodate growing heads.

 

Babies/Toddlers (Ages 0–4)

  • Average head size: 19–20 inches (size 6 or smaller, often labeled “Infant” or “My 1st”).

  • Opt for adjustable snapbacks or soft Flexfit youth caps from Yupoong. Decky and Infinity Her offer limited baby sizes; check for “One Size Fits Youth” (OSFY) options.

 

Tips for Best Fit

  • Fitted Caps: Choose the closest size, rounding up if between sizes. Wool caps may shrink slightly, so avoid a tight fit.

  • Flexfit Caps: Select based on Yupoong’s size ranges; the elastic sweatband provides 1/4–1/2 inch of stretch.

  • Snapbacks/Adjustable Caps: Adjust the closure (plastic snapback or tri-glide buckle for Infinity Her) for a custom fit. Ensure the cap sits comfortably without pinching.

  • Infinity Her Caps: Designed for women’s narrower head shapes, with adjustable closures and ponytail-friendly features. The Elude™ sweatband prevents makeup stains, ideal for active women.

  • Hair Considerations: For long or thick hair, choose Infinity Her caps with Evolve™ openings or snapbacks/Flexfit caps (e.g., Yupoong L/XL for men or women with thick hair).

  • Youth/Baby Fit: Prioritize adjustable snapbacks or soft Flexfit caps for growing heads. Ensure the cap isn’t too tight to avoid discomfort.

  • Brand Variations: Sizes may vary slightly due to manufacturing differences. Infinity Her’s narrower crowns and Flexfit’s stretch make them more forgiving than traditional fitted caps.

References

  • For detailed sizing, visit:

    • Richardson Sizing Chart

    • Yupoong/Flexfit Sizing

    • Infinity Her Brand

    • General Cap Sizing Guide

  • For additional help, contact our customer support or refer to brand websites for specific cap styles.

Hat Sizing Charts