Short answer
GS (grade school) is big kids, 1Y to 7Y. PS (preschool) is little kids, 8C to 3Y. TD (toddler) is baby and toddler, 1C to 10C. Those ranges come from Nike’s kids size chart, which puts big kids at about ages 7 to 12, little kids at 3 to 7 and baby and toddler at 0 to 3. Kids versions of a colorway have different style codes from the adult pair.
Kids size runs
From Nike’s kids footwear size chart
| Label | Nike group | Sizes | Foot length range (in) | Ages (Nike menu) |
|---|---|---|---|---|
| GS | Big kids | 1Y to 7Y | 7 15/16 to 9 11/16 | 7 to 12 |
| PS | Little kids | 8C to 3Y | 5 15/16 to 8 9/16 | 3 to 7 |
| TD | Baby and toddler | 1C to 10C | 3 9/16 to 6 9/16 | 0 to 3 |
The groups overlap (8C to 10C and 1Y to 3Y appear in two groups), so go by foot length. Leave about a thumb’s width at the toe for growth.
Blue colorways sold in kids sizes
-
Dunk Low
Light Photo Blue Silver
- Style code
- FB9109-004
- Released
- 2025
- Original retail
- Not confirmed
- Sizes seen
- GS
Source: GOAT · Search on Amazon
-
Dunk Low
Black Fade Game Royal
- Style code
- HJ9209-400
- Released
- Jul 2024
- Original retail
- Not confirmed
- Sizes seen
- GS
Source: GOAT · Search on Amazon
-
Dunk Low
Dark Marina Blue
- Style code
- DJ6188-400
- Released
- Dec 2021
- Original retail
- $100
- Sizes seen
- Men, GS
Sources give December 2021 or February 2022.
Source: Kick Game · Search on Amazon
-
Dunk Low
Georgetown (Championship Grey)
- Style code
- DD1391-003
- Released
- Nov 2021
- Original retail
- $100
- Sizes seen
- Men, GS, PS, TD
Source: Kick Game · Search on Amazon
-
Dunk Low
Hyper Cobalt
- Style code
- DD1391-001
- Released
- Feb 2021
- Original retail
- $100
- Sizes seen
- Men, GS, PS, TD
Black/Hyper Cobalt
Source: House of Heat · Search on Amazon
Many other colorways had kids runs too; our cards only list the size runs our sources mention. The colorway finder covers the full catalog.
Questions people ask
What does GS mean on Dunks?
Grade school: Nike’s big kids sizes, 1Y to 7Y. A GS 7Y matches a men’s 7 in foot length (9 11/16 inches on Nike’s charts).
Why does the kids version have a different style code?
Each size run is its own product. The Hyper Cobalt Dunk Low, for example, is DD1391-001 in men’s, with separate GS, PS and TD codes. Search the kids code to find the right listing.
Do kids Dunks have the same materials as adult pairs?
Not always. Kids pairs can use different leather or lining. Check the listing description for the exact code.
Sources
Last reviewed October 29, 2026. Release details, codes and listings change; check the style code on the listing before you buy.