Last Updated on May 26, 2025 by Andy Walker
What GS, PS, and Other Shoe Size Codes Really Mean
If you’ve ever shopped online for shoes—especially for kids or hard-to-fit feet—you’ve probably seen cryptic size codes like GS, PS, or TD. Add in width notations like 2E or B(M), and the process can get confusing fast. Whether you’re buying for a preschooler, a growing tween, or yourself, understanding these specialty sizing terms can save you time, frustration, and returns.
This guide explains what those abbreviations mean, how to navigate confusing shoe labels, and how to shop smart—especially on Amazon. A sizing chart is included for easy reference, along with a secondary chart for less common codes.
What does GS mean in shoe sizing?
GS stands for Grade School. This term is used for youth shoe sizes that generally fit children between the ages of 6 and 12. GS sizes usually range from 3.5Y to 7Y. At the upper end of the scale, GS shoes can sometimes be worn by adults with smaller feet—especially women—since the sizing overlaps.
For instance, a GS 7Y is roughly equivalent to a women’s size 8.5 in U.S. sizing. Many major brands like Nike and Adidas offer GS versions of their most popular adult shoes at a lower price, with very similar construction and styling.
What does PS mean in shoe sizing?
PS stands for Preschool. These shoe sizes typically fit children aged 3 to 5 and fall between toddler sizes and grade school sizes. PS shoes usually range from 10.5C to 3Y and are designed with growing feet in mind.
These shoes often come with easy-to-use closures like Velcro or elastic laces, and they tend to have flexible soles to encourage natural movement. When your child is too big for toddler shoes but not yet ready for grade school sizes, PS is the category to look for.
What does TD mean in shoe sizing?
TD stands for Toddler. These sizes are made for kids approximately 1 to 3 years old and generally range from 4C to 10C. TD shoes are designed to support first walkers and toddlers who are constantly on the move.
They’re usually lightweight, have soft yet durable soles, and are easy for parents to put on and take off. The label TD can help you quickly identify the appropriate size range when browsing online or in-store.
What do the letters C and Y mean in kids’ shoe sizes?
C stands for Child and is used in toddler and preschool sizes. Y stands for Youth and is used in grade school sizes. For example, a size 8C is for a younger child, while a size 5Y is for an older child—possibly even a preteen.
As a general rule:
- Sizes labeled with “C” are smaller (typically toddlers and preschoolers).
- Sizes labeled with “Y” are for bigger kids (typically grade school ages).
Understanding the transition from C to Y can help prevent ordering shoes that are too big or too small during growth spurts.
Kids’ Shoe Sizing Conversion Chart
This chart helps you convert U.S. kids’ sizes into approximate ages, foot lengths, and equivalent UK and EU sizes. It’s a handy reference when shopping for children’s shoes, especially across different sizing systems.
Foot Length (inches) | US Size (C/Y) | Approx. Age | UK Size | EU Size |
|---|---|---|---|---|
5.0″ | 4C (TD) | 1 year | 3.5 | 19.5 |
5.5″ | 6C (TD) | 2 years | 5.5 | 22 |
6.25″ | 8C (TD) | 3 years | 7.5 | 25 |
6.75″ | 10C (PS) | 4 years | 9.5 | 27.5 |
7.25″ | 12C (PS) | 5 years | 11.5 | 30 |
8.0″ | 2Y (GS) | 6–7 years | 1.5 | 33 |
8.5″ | 4Y (GS) | 8–9 years | 3.5 | 35 |
9.25″ | 6Y (GS) | 10–12 years | 5.5 | 38 |
9.75″ | 7Y (GS) | Teen | 6.5 | 40 |
Use this chart to confirm your child’s foot size before ordering online. Simply measure the foot from heel to the tip of the longest toe while standing.
What Do Shoe Width Codes Like B(M), D(M), and 2E Mean?
Width is just as important as length when it comes to comfort. Shoe manufacturers use letter codes to indicate the width of the shoe, and these can vary by brand and gender.
Common width codes include:
- B(M): Medium or standard width for women
- D(M): Medium or standard width for men
- 2A or AA: Narrow width for women
- 2E or EE: Wide width, commonly used in men’s shoes
- 4E or EEEE: Extra wide for very broad feet
- 4A or AAAA: Very narrow, uncommon in mainstream brands
If you have wide or narrow feet—or need orthopedic space for insoles—look for brands like New Balance, Brooks, or Propet that specialize in multiple widths.
Secondary Sizing Codes and What They Mean
Here are some additional abbreviations you may see when shopping for specialty shoes:
Code | Description | Where It’s Found |
|---|---|---|
W | Wide fit | Casual and athletic shoes |
N | Narrow fit | Dress shoes and slim-fit sneakers |
M | Medium width | Default width, often used in listings |
XW | Extra wide (same as 2E or WW) | Orthopedic and comfort brands |
WW | Double wide | Alternative to 2E |
U | Unisex sizing | Converse, Vans, Crocs |
BR | Brazilian sizing | Flip-flops and sandals from South America |
JP | Japanese sizing (in centimeters) | International sneaker retailers |
These codes are less universal but still useful for international brands or niche shoe categories.
How to Shop for Specialty Sizes on Amazon
Amazon carries thousands of shoes in every imaginable size category, but finding the right fit can feel overwhelming. Thankfully, you can use Amazon’s filters and smart search techniques to zero in on specialty sizes more easily.
Start With the Right Search Terms
Begin your search using specific sizing keywords like:
- “GS sneakers” for youth shoes
- “PS shoes” for preschool sizes
- “TD toddler shoes” for early walkers
- “extra wide men’s shoes” for specialty widths
- “narrow women’s shoes” for slim fits
- “orthopedic walking shoes” for comfort or medical needs
For example, try searching “GS Nike Air Jordan” to see youth-sized versions of popular sneakers.
Use Amazon’s Size Filters
Once you’ve started browsing, refine your results using Amazon’s sidebar filters:
- Select your shoe size, width, and department (men, women, boys, girls)
- Filter by brand, price, or Prime shipping for convenience
- Click “Size Chart” on product pages to view brand-specific measurements
Reading reviews is key—many shoppers mention whether a shoe runs large or small.
Enable Free Returns or Prime
If you’re trying a new fit category, choose shoes with Free Returns or that are Prime Eligible. This gives you flexibility to try the shoes at home and return if they don’t work out.
Look for the “Free Returns” label below the price to save yourself potential hassle.
Sort by Customer Reviews
Once you’ve applied size and width filters, sort by Average Customer Review to see top-rated shoes in your category. This is especially useful for niche fits like extra wide or narrow shoes, where comfort and durability matter most.
Quick Amazon Links by Size Category
Here are direct Amazon search links for specialty size categories, all using your affiliate tag:
- Grade School (GS) Kids’ Shoes
- Preschool (PS) Shoes
- Toddler (TD) Shoes
- Extra Wide Men’s Shoes (4E)
- Narrow Women’s Dress Shoes
- Orthopedic or Diabetic Shoes
Bookmark or share these links to help friends and family shop more confidently.
