All you need to know about Roller Skate sizing – Fufanu
Size Chart
Nattork Kids Roller Skates for Boys Girls Kids, 4 Sizes Adjustable Quad Skates with All Light up Wheels - Best Birthday Gift for Indoor Outdoor Sports Blue Small(10C-13C)
Sizing Help | Riedell Roller Skates
Sizing Chart | Skateline
EDEA Roller Skate Plate Size Chart - Roll Line and More