Dear friend;<br />You don't need to choose light color，Because every shoes can glow 7 kinds of color.<br />It not only can shine one color，but also can mix seven colors flashing.<br />You just need to change the color by the switch.<br />========================================================<br />If you are a man， you can choose the right size according to the size of the following.<br />shoes  EU Size 39 = US Size 6.5 = UK Size 6.5 = shoes length 245<br />shoes  EU Size 40 = US Size 7 = UK Size 7 = shoes length 250<br />shoes  EU Size 41 = US Size 8 = UK Size 7.5 = shoes length 255<br />shoes  EU Size 42 = US Size 8.5 = UK Size 8 = shoes length 260<br />shoes  EU Size 43 = US Size 9 = UK Size 8.5 = shoes length 265<br />shoes  EU Size 44 = US Size 10 = UK Size 9.5 = shoes length 270<br />shoes  EU Size 45 = US Size 11 = UK Size 10.5 = shoes length 275<br />shoes  EU Size 46 = US Size 12 = UK Size 11.5 = shoes length 280<br />