Could cause issues with posture, feet, ligaments & more.
Tesco has come under fire for selling school shoes with giant "wedged" heels for girls as young as five.
Protesters say the F&F patent "platform" shoes are inappropriate for children's feet and normalises adult fashions among youngsters.
Tesco says the £15 footwear - which can be bought as small as a child's size nine - matches "style with comfort" and is the "chic choice for your girl".
A Tesco spokesperson said: "We listen closely to all feedback and are always guided by our customers.
"We'll review this product carefully based on what our customers tell us."