Junior Glide Monofin (CMAS Approved for Kids 10-11) Engineered specifically for young swimmers, the Junior Glide Monofin features a 60 cm blade width that fully complies with official CMAS regulations for ages 10 to 11. With an overall length ranging from 55 cm to 60 cm (depending on foot size), this high-performance monofin offers the perfect balance of comfort, speed, and competition-ready design for junior finswimmers.