There is no garment composition marked on the neck band, but it appears to be cotton.
You will need a pair of collar studs to attach this collar to your shirt.
These studs are NOT included; they are available separately.
Vintage collar, probably over half a century old, but perfectly wearable.
Previous owners' laundry marks on inside of collar, but collar has been washed and lightly starched since its last use, and is in perfect used condition.