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 Package Included: 1* a pair of knee pads [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