Features： Product weight:210g Product size:S: 48-54cm Suitable for weight:15kg-40kg Suitable age:3-13 years old Material:PE30%. Polyester 40%. Velvet 10%. Rubber band 15% other 5% Description： 1.Made of high quality material with the characteristcis of environmentally friendly, durable and impact resistant. It can effectively protect children's vulnerable parts in sports. 2.Super breathable fabric and better moisture permeability. 3.The protector is designed according to ergonomics, with breathable material, soft and comfortable, and high degree of fit. 4.Protective pad set is made of long lasting material that is soft and comfortable to touch. 5.In order to reduce the weight of the tools, the designer will design the elbow and knee protector more lightweight, beautiful, convenient and practical. 6.It is suitable for children's roller skating, riding and other outdoor sports protection. Size chart： S: 48-54cm Package included： 2 knee pads 2 elbow pads 2 wrist pads Notes: 1. 1 inch = 2.54 cm 2. Please measure it yourself to choose the right size. 3. Due to the difference between the different displays, the picture may not reflect the actual color of the item. Thank you!