Schwinn

Seat tube: 51cm
Top tube: 56cm
Color: Blue
Wheel size unknown

This is a medium youth size.
Seat tube: 25cm
Suitable for a leg length of 19.5+ inches.

This is a medium youth size.
Seat tube: 25cm
Top tube: 46cm
Suitable for a leg length of 16+ inches.

ST: 46
TT: 55

Seat tube: 62cm
Top tube: 57cm
Color: Black
Wheel size unknown

Seat tube: 48cm
Top tube: 51cm
Color: Black
Wheel size unknown

Seat tube: 47cm
Top tube: 50cm
Color: Blue
Wheel size unknown

Seat tube: 46cm
Top tube: 54cm
Color: Blue
Wheel size unknown

Seat tube: 47cm
Top tube: 58cm
Color: Blue
Wheel size unknown