The 100N lifejacket is designed to float even a prone person face up. This jacket is also available in small sizes down to infants providing great security for kids learning about water sports.
Please note sizing is as follows:
S: 40-60kg, 70-90cm chest
M: 60-70kg, 80-95cm chest
L: 70-90kg, 90-115cm chest
XL: 90+kg, 115cm+ chest