Kids Sneakers Children Baby Girls Boys Letter Mesh Led Luminous Socks Sport Run Sneakers Shoes Sapato Infant Light Up ShoesInternal length of 21 yards, internal length of 13.3cm, internal length of 22 yards, internal length of 13.8cm, internal length of 23 yards, internal length of 14.2cm, internal length of 24 yards, internal length of 14.7cmSize 25, internal length 15.2cm, size 26, internal length 16cm, size 27, 16.8cm, size 28, 17.3Cm, size 29, 17.8cm, size 30, 18.cmBecause the shoes are lit and not USB ports, they are stored by a battery on the sole of the shoe, which sometimes causes them to not light up over time. It is normal for one shoe to light up and the other to not light up, or for one shoe to light upand the other to dark down. If there are lighting issues, such as differences in brightness between the left and right lights, varying shades of the left and right lights, and uneven colors, we do not treat them as quality issues. Those who mind shouldtake photos with caution