Children's models
Model	Kilograms	Pounds	Stones
F40	35 - 45	77 - 99	5.5 - 7
F50	45 - 55	99 - 121	7 - 9
F60	55 - 65	121 - 143	9 - 10.5
Adult's models
Model	Kilograms	Pounds	Stones
M60	55 - 65	121 - 143	9 - 10.5
M70	65 - 75	143 - 165	10.5 - 12
M80	75 - 85	165 - 187	12 - 13.5
M90	85 - 95	187 - 209	13.5 - 15
M100	95 - 105	209 - 231	15 - 16.5
M110	105 - 115	231 - 254	16.5 - 18