Its just a normal top hat with some magic.
Well it sometimes is pink but only on saturdays is it purple
Frosty's hat was made from silk .
Crystal
freeze
Frosty the Snowman's buttons were black. They were made out of rocks. They weren't blue, red, yellow, green, or orange they were plain old black.
It is made of Kevlar.
His hat! Frosty got a hold of the magician's hat, which is what made him come alive. When the magician discovered that the hat was magical, he wanted it back.
Silk
The Mom's Name: Crystal Thats all ik
magical top hat
The magic hat. made out of silk
Chilly & Milly - They appear in the movie "Rudolph & Frosty's Christmas in July - released in 1979. As far as I can tell, there is no mention of how they came to be. Perhaps Frosty & Crystal built their own snow children?