Head band

1. A head band comprising:

a band portion and a tightening portion;

the band portion having a first band and a second band, wherein an outer surface of the first band opposes an inner surface of the second band; and

at least one spacer between the first and the second band forming a gap between the first band and the second band;

the tightening portion having a strap and a tightener configured to tighten the strap, wherein the strap is hingedly connected at approximately each end of the band portion,

wherein the strap of the tightening portion is hingedly attached to the band portion by the at least one spacer.

2. The head band of claim 1 , wherein the at least one spacer further comprises a female portion extending from the outer surface of the first band, and a male portion extending from the inner surface of the second band, wherein the female portion receives the male portion to removably attach the first band and the second band.

3. The head band of claim 2 , further comprising

the male portion extending from the inner surface of the second band having a sloped surface,

the female portion having a receiver,

wherein a dimension of the sloped surface is smaller than a dimension of the receiver, and another dimension of the sloped surface is larger than another dimension of the receiver.

4. The head band of claim 1 , wherein the first band portion and the second band portion each have an array of vent holes therethrough.

5. The head band of claim 1 , wherein the strap further comprises a first strap and a second strap, the first and second straps each hingedly connected at one end on the spacer arranged at approximately each end of the band portion, the first and second straps connected at a second end by the tightener.

6. The head band of claim 5 , wherein the tightener receives the second ends of the first and second straps, and wherein the tightener is configured to selectively tighten or loosen the first and second straps.

7. The head band of claim 6 , wherein the tightener is a rack-and-pinion mechanism and the first and second straps each have rack teeth, the rack-and-pinion mechanism having a rotatable pinion wheel having pinion teeth, wherein the pinion teeth engage the rack teeth, wherein the pinion wheel is rotatable to selectively tighten or loosen the first and second straps.

8. The head band of claim 1 , further comprising the second band having a visor extending from an outer surface thereof.

9. The head band of claim 8 , further comprising a cap attached to an upper end of the second band.

10. The head band of claim 1 , further comprising attaching the second band to an inner surface of a cap.

11. The head band of claim 9 , wherein the first band is removable from the second band.

12. The head band of claim 1 , further comprising a fabric covering an inner surface of the first band.

13. The head band of claim 1 , wherein the first band and the second band are attached to each other with only the at least one spacer.

14. An apparatus for wearing on a head comprising:

a band portion and a tightening portion;

the band portion having a first band and a second band, wherein an outer surface of the first band opposes an inner surface of the second band;

at least one spacer between the first band and the second band forming a gap between the first band and the second band;

a visor extending from a bottom edge of an outer surface of the second band;

the tightening portion having a strap and a tightener configured to tighten the strap, wherein the strap is hingedly connected at approximately each end of the band portion,

wherein the strap of the tightening portion is hingedly attached to the band portion by the at least one spacer.

15. The cap of claim 14 , wherein the visor is formed integrally with at least one of the first band or the second band.

16. An apparatus for wearing on a head comprising:

a band portion and a tightening portion;

the band portion having a first band and a second band, wherein an outer surface of the first band opposes an inner surface of the second band;

at least one spacer between the first band and the second band forming a gap between the first band and the second band;

a visor extending from a bottom edge of an outer surface of the second band;

the tightening portion having a strap and a tightener configured to tighten the strap, wherein the strap is hingedly connected to the at least one spacer at approximately each end of the band portion; and

a cap portion, wherein the cap portion is attached to the band portion; wherein the tightener protrudes from an opening in the cap portion.

17. The cap of claim 16 , wherein the visor is formed integrally with the second band.

18. An apparatus for wearing on a head comprising:

a band portion and a tightening portion;

the band portion having a first band and a second band, wherein an outer surface of the first band opposes an inner surface of the second band;

at least one spacer between the first band and the second band forming a gap between the first band and the second band;

the tightening portion having a strap and a tightener configured to tighten the strap, wherein the strap is hingedly connected at approximately each end of the band portion; and

a hat portion, wherein the hat portion extends over an outer surface of the second band,

wherein the strap of the tightening portion is hingedly attached to the band portion by the at least one spacer.

19. The cap of claim 18 , further comprising a visor extending from a bottom edge of an outer surface of the second band.

20. The cap of claim 19 , wherein the visor is formed integrally with at least one of the first band or the second band.

21. The cap of claim 19 , wherein the hat portion is attached directly to the visor.

22. The cap of claim 21 , wherein the hat portion is attached directly to the second band.