About this item ?Injury Prevention & Phenomenal Protection: INDEEMAX volleyball knee pads for children are made of neoprene material. The 0.5-inch-thick built-in sponge pad is shock-absorbing and could greatly protect the children from unnecessary injuries like scratches and abrasions. Thus, it will enhance kids’ performance on cement, brick, or hard floor. ?Three Sizes Available: There are three sizes and four colors (black/rose/pink/blue) in stock now. You need to determine the size by the circumference (3” above the kneecap): S/M recommend for circumference: ≤10"(≤25cm); L/XL recommend for leg circumference: ≤12"(≤30cm); 2XL recommend for leg circumference: 12-16"(30-41cm). We suggest you do not choose size ONLY based on your kids’ Age. ?Comfortable & Breathable: With silky lycra material in the inside liner (Only size S/M and L/XL), the knee pad feels smooth and soft, makes kids’ knees comfortable, and can be worn all day long without any sense of bondage. The outer perforated design ensures a high level of breathability, our knee pads are lightweight, snug, lint-free, air-permeable, moisture-wicking, and easy to dry. ?Ergonomic Design: Unfolded in a butterfly shape, this protective children's pad is in line with engineering. It is anatomically contoured, and our designed knee pad is not easy to slip, regardless of kids' activities. The adjustable magic tape design has a better grip, it ensures children can accommodate the circumference of the knee pads to their needs and is easy to wear. ?Fits Multiple Sports: INDEEMAX knee pad for kids is versatile, and great for any indoor&outdoor sports, such as sliding, bicycling, skateboarding, skiing, running, jogging, training, bodybuilding, weightlifting, tumbling, dancing, climbing, wrestling, crawling, tennis, football, basketball, badminton, yoga, golf, soccer, fitness, lower body exercises, etc. IF you feel a peculiar smell after receiving the product, you can WASH it by hand and dry them in the air BEFORE using it.