Abstract: A baseball cap has a band of material positioned at a base of a crown portion of the cap. The band may be formed of a first strip of material, such as spandex, that is stretchable along a direction that coincides with the length of the band or a direction perpendicular to the length of the band. The band includes a binding or second strip of material or binding that is adhered to the band using a heating process.

Abstract: The invention discloses a cap with a bluetooth headset which is in the technology field of daily supplies, including a cap body. The cap body has a bluetooth headset which comprises a transceiver and two acoustic generators on the right and left respectively, the transceiver is set at either position of the cap body, each of the acoustic generators are respectively set at a side of the cap body corresponding to the ears. A piece of lead is used to connect the transceiver and acoustic generators. Compared with prior art, the invention provides dual-track voice, so as to make communication clearer, reduce noise influence on environment. The acoustic generators are fixed on both sides of the cap body so firmly that it is not prone to be dropped and lost, even under movement states, it is still very firm. The invention is applicable to outside activities, travel, riding etc.

Abstract: A hat with adjustable size includes at least one expansion strip 4. Several hat pieces 1 and the expansion strip 4 are sewed to form a crown 5. The expansion strip 4 is sewed at a seam of the hat pieces. The expansion strip 4 is made of a stretchable fabric. A sweatband 3 is sewed along a lower inner periphery of the crown 5. The sweatband 3 is made of a stretchable fabric.

Abstract: A hat to which an MP3 music player is connectable in the field of daily-used items is provided, which includes a hat body. An earphone is respectively disposed at two sides of the hat body. Connecting joints are disposed at outer sides of positions corresponding to human ears on the hat body. Connecting pieces corresponding to the connecting joints are disposed on the earphones. A connecting wire between the two earphones is disposed within the hat body. A slot for accommodating the MP3 music player is provided on the earphone at either of the two sides. An input plug of the earphones is disposed in the slot. The input plug is electrically connected to the earphone at the corresponding side. When the device is used, the MP3 music player can be connected to the input plug in the slot and no connecting wire is exposed outside. The earphones at the two sides can be pulled out from the connecting joints, so that only the connecting joints are left on the hat body, which is neat and clean.

Abstract: The invention discloses a cap with a bluetooth headset in the technology field of daily supplies, including a cap body. The said cap body has a bluetooth headset which comprises a transceiver and two acoustic generators on the right and left respectively, wherein the transceiver is set at either position of the cap body, the acoustic generators are set at either side of the cap body corresponding to the ears. A piece of lead is used to connect the transceiver and acoustic generators. Compared with prior art, the invention provides dual-track voice, so as to make communication clearer, reduce noise influence on environment. The acoustic generators are fixed on both sides of the cap body so firmly that it is not prone to be dropped and lost, even under movement states, it is still very firm. The invention is applicable to outside activities, travel, riding etc.