... 1 material,Plastic rope+Cotton rope 2 weight,90g 3 Length,2.8M Digiyal SKIP1 material,pvc Sponge+Cotton rope2 weight,90g3 Length, ... system, maintaining a strong and healthy. Skip the effect reducing weight also is very significant, it can strong muscles, hip ... to children, this form of accurate reproduce. Children in the rope skipping activities, able to consciously, can cultivate their organisational ...