Gracallet&reg; Hat Flexible Removable Chin Cord Removable and flexiblechin cord, universal fit any kind of hat. No matter your hat has eyelet or not, this chin cord will works perfectly. A great removable strap to protect your hat from blowing away . Two metal buckle, tie the strap to your hat tightly. The plastic buckle adjust the length of the strap. Package included : 5 x hat chin cord (hat is not included)