Specification: Product name: children's sports knee pads Material: Polyester, spandex Color: Black Size :YS/YM/YL/YXL Suitable for sports: basketball, football, tennis, running and other outdoor sports Design features: Drops rubber anti-slip strip, not easy to fall off comfortable and breathable Scale table: Size YS YM YL YXL Length (cm) 34 37 40 41.5 Upper circumference (cm) 25 27.5 30 32.5 Lower circumference (cm) 17.5 20 22.5 25 Suitable for height (cm) 100-120 120-130 130-140 140-150 Suitable weight (kg) 13-20 18-25 23-30 28-35 Age appropriate (Y) 5-6 7-8 9-10 10-12 Feature: 【Slim-fit tailoring】 for the characteristics of the movement outside the meeting, with the human body engineering structure design, more comfortable. 【EVA protective block】provides key protection for joints and vulnerable parts. 【 Elastic fabric 】 Breathable and quick-drying polyester fabric is used for comfortable fitting while maintaining elastic wrap. 【Four needles and six threads】 Seamless stitching of fine thread, smooth stitching to increase the comfort of movement, so that the movement more freely. 【Anti-slip silicone strip at trouser foot】Thoughtful design, effectively prevent trouser foot sliding up and down during sports, improve sports performance. Package Included: 1* a pair of knee pads Note: 1.Please allow 1-2cm size deviations due to manual measurement,measuring methods and tools. 2.The picture may not reflect the actual color of the item because of different photographing light and display monitor.Thanks for your understanding. Silicone strip,Prevents slipping down,Environmentally material prevent allergies.support for activities requiring strenuous arm Breathable and moisture wicking,compression fabric for superior and optimum comfort,support,and relief without undermining and compromising your mobily.