It is made of high quality materials,Soft hand feeling, no any harm to your babyLovely and Charming design available,Make your baby more lovelyGender:Girls/BoysShoe upper material: MeshSole material:RubberFashion Element:LuminousClosure Type:Slip-onStyle:Casual,Fashion,PartyPackage content:1 pair baby shoes(Not Including shoes box)Note:Insole Length=Foot Length 0.8cmM,Means The Standard WidthPlease allow 1-3mm error due to manual measurement.If you are not sure which size or other problems,please contact us to make sure you choose correct size.Due to light or display setting,please understand that there may be color difference.Because the shoes are not USB-connected, they are light-emitting which might result battery accumulates light over time. It is normal that one unlight, the other one light or one is light, the other one is dark.If there is a problem with the light, such as different lights in both shoes, one light up but the other one not or color unbalanced, we are not taking care of the quality issue and it can not be as after sales problem.