Function: Anti-slip, lighted, waterproof, lightweight, wear-resistantBest gift for kids: The spiderman led sneakers are shining through vibration induction. No Need Tie Up Lace, the Velcro closure makes it easy to put on and take off.Upper material: PUSize:Size 23 For Inner Length: 14.5cmSize 24 For Inner Length: 15cmSize 25 For Inner Length: 15.5cmSize 26 For Inner Length: 16cmSize 27 For Inner Length: 16.6cmSize 28 For Inner Length: 17.2cmSize 29 For Inner Length: 17.8cmSize 30 For Inner Length: 18.5cmColor: Blue, Red(optional)Package List:1 pair x shoes