Compact Size, Perfect for Travelling - This short fins is an excellent choice for avid travelers as the short blade is lightweight and compact, making it ideal for packing with ease. And it is a useful swimming aid either for pool or sea swim enthusiasts, bodyboarders and snorkelers. Kids and Adults Size - 3 unisex size choice for Kids, Children, Teens, Young Adults, Adults(women, men). Generally, kid’s US Standard Size 9-13 should pick size Kids JR 9-13, Young Adults or Adults whose size is between 4.5-8.5 should pick size S/M, and the size between 9-13 should pick L/XL. Just take the fins and enjoying your snorkeling or swimming. CAPAS adjustable snorkel fins