It is made of 3 layers Ostrich feathers

2 layers with fluffy feathers( 24 feathers longer feathers buildup double layers
(about 21" - 23" )(53-58 cm)
1 layer with fluffy feathers( 12 feathers shorter feather)
(about 15" 17 ") (40-45 cm)
It easy to open and close

measurement

The length unto staves of fan is 35 inch (89 cm);

180 degree Full Open up width is 68 inch (172 cm) 

the fan net weight is approximate 530g