A head-mounted display includes a wearing part, a display body, a strap, a follower, and a buckle assembly. The display body is disposed on the wearing part. The strap includes a first end, a second end, and a handle portion. The wearing part is located at a front side of a wearing space surrounded by the strap. The first end and the second end are overlapped at the front side. The handle portion is located at the first end or the second end. The follower is disposed on the wearing part and coupled to the first end and the second end. The buckle assembly is disposed between the wearing part and the first end, and is adapted to lock a relative position between the wearing part and the first end in a buckled state and remove the interference between the wearing part and the first end in a released state.

An adjustable brim for use with a hat, such as a baseball-style hat includes a sheath having a rounded shape for positioning around the hat and including a channel, a body, a cord positioned within the channel of the sheath, and an adjustment fastener positioned on the cord for adjusting the size of the sheath. The body includes an inner edge, an outer edge opposite the inner edge, an outer surface, and an inner surface opposite the outer surface, and the inner edge of the body is connected to the sheath.

An adjustable brim for use with a hat, such as a baseball-style hat includes a sheath having a rounded shape for positioning around the hat and including a channel, a body, a cord positioned within the channel of the sheath, and an adjustment fastener positioned on the cord for adjusting the size of the sheath. The body includes an inner edge, an outer edge opposite the inner edge, an outer surface, and an inner surface opposite the outer surface, and the inner edge of the body is connected to the sheath.

Embodiments are disclosed for headwear including an eyewear retaining pocket. For example, the headwear may include a headwear body, a first top opening disposed on a first side of the headwear body and providing access to a first pocket formed at the first side of the headwear body, the first pocket including a first inner surface and a second inner surface, and a first bottom opening disposed on the first side of the headwear, below the first top opening, and providing access to the first pocket or to another pocket formed at the first side of the headwear body, where the first top opening and the first bottom opening are of unequal size.

Embodiments are disclosed for headwear including an eyewear retaining pocket. For example, the headwear may include a headwear body, a first top opening disposed on a first side of the headwear body and providing access to a first pocket formed at the first side of the headwear body, the first pocket including a first inner surface and a second inner surface, and a first bottom opening disposed on the first side of the headwear, below the first top opening, and providing access to the first pocket or to another pocket formed at the first side of the headwear body, where the first top opening and the first bottom opening are of unequal size.

An adjustment mechanism for allowing a user to adjust a length of a headband includes a stationary case, a clutch, and a knob. The stationary case defines an opening and a circular recess. The clutch includes a cam arranged within the circular recess and a pinion extending axially from the cam such that the pinion is positioned outside the case via the opening to engage with the headband. The clutch also includes a roller located adjacent to a first cam portion of the cam. The knob has an actuating element arranged between the roller and a tab of the cam. The knob is rotatable in a first direction for allowing the user to shorten the length of the headband. The knob is rotatable in a second direction allowing the user to increase the length of the headband.

An adjustment mechanism for allowing a user to adjust a length of a headband includes a stationary case, a clutch, and a knob. The stationary case defines an opening and a circular recess. The clutch includes a cam arranged within the circular recess and a pinion extending axially from the cam such that the pinion is positioned outside the case via the opening to engage with the headband. The clutch also includes a roller located adjacent to a first cam portion of the cam. The knob has an actuating element arranged between the roller and a tab of the cam. The knob is rotatable in a first direction for allowing the user to shorten the length of the headband. The knob is rotatable in a second direction allowing the user to increase the length of the headband.

Embodiments are disclosed for headwear including a crown and an elasticizing kit, the elasticizing kit including a double-sided sew flange, the double-sided sew flange having a first terminating end opposite a second terminating end, each of the first and second terminating ends including a respective slot for inserting material, a size-adjusting mechanism including at least one strap and adapted to selectively adjust a size of the headwear, the size-adjusting mechanism being coupled to the double-sided sew flange, and an elastomeric strap coupled to the size-adjusting mechanism, the elastomeric strap being attached directly to the slot of the first terminating end of the double-sided sew flange or the slot of the second terminating end of the double-sided sew flange.

Embodiments are disclosed for headwear including a crown and an elasticizing kit, the elasticizing kit including a double-sided sew flange, the double-sided sew flange having a first terminating end opposite a second terminating end, each of the first and second terminating ends including a respective slot for inserting material, a size-adjusting mechanism including at least one strap and adapted to selectively adjust a size of the headwear, the size-adjusting mechanism being coupled to the double-sided sew flange, and an elastomeric strap coupled to the size-adjusting mechanism, the elastomeric strap being attached directly to the slot of the first terminating end of the double-sided sew flange or the slot of the second terminating end of the double-sided sew flange.

A head positioning aid includes at least one head positioning assistor and at least one securing member. Some head positioning aids include positioning members secured to a headwear member. The positioning members maintain an infant's head in midline. An optional cheek flap protects the skin on the face. An optional support member supports the neck and an open airway. Size adjustment members may also be used to secure and orient tubing for a nasal cannula.