Bonnet with spandex elastic strip

Claim 1

A bonnet for wearing on the head, the bonnet comprising: a head covering shaped to define an opening into the head covering, the opening shaped and sized to receive the head and having a closed and unbroken ring perimeter, the head covering at the opening having a fixed length around the perimeter of the opening, the opening being at an open bottom end of the head covering; and an elastic band doubled over on itself and attached at the open bottom end of the bonnet and positioned to encircle completely the perimeter of the opening, the elastic band having a non-stretched condition in which the band is of a shorter length around a perimeter of the opening than the fixed length of the material of the head covering at the opening such that the band reduces the size of the opening, the band being configured such that when the band with the head covering is installed on the head the band is stretched and tightens around the head, the elastic band being attached to the head covering to form an extension of the bonnet below the opening so that the band contacts the head without pressing on the head through the head covering; wherein the elastic band is a closed and unbroken ring strip of a spandex material configured to stretch elastically and to restore itself elastically toward the non-stretched condition.