"Knee pads is breathable, soft and elastic, and comfortable to the touch. Moisture-absorbing and breathable, the baby is more comfortable to exercise. The anti-skid pad is designed with cartoon animals, and the design is lovely, non-slip, cushioning, abrasion resistance." Material - 85% cotton,12% Dacron and 3% spandex. Breathable, soft, and elastic, protects babys delicate skin.