Hello Kitty Pink Kid Silicone Swim Cap Flower for Kids Under Age 10 Sanrio Licensed Item Dimensions: approx. 20.8 x 17.2 cm / 8.2" x 6.8" Material: 100% Silicone Please avoid sharp objects such as fingernails or hairpin This swimming cap is not suitable for older kids over age 10 & teenagers or kids with long hair.