Abstract: A fiber for artificial hair, having a base fiber, a metal ion, and an antistatic agent, in which the metal ion and the antistatic agent are present in at least a part of a surface of the base fiber, the metal ion is at least one selected from the group consisting of a silver ion, a zinc ion, and a copper ion, a content of the metal ion is 5.0×10?5 to 1.0×10?2% by mass based on the total mass of the fiber for artificial hair, the antistatic agent is at least one selected from the group consisting of a cationic antistatic agent and a non-ionic antistatic agent, and a content of the antistatic agent is 0.001 to 1% by mass based on the total mass of the fiber for artificial hair.

Abstract: A fiber for artificial hair, having a base fiber and a metal salt of a polymer compound that is present in at least a part of a surface of the base fiber, in which the metal salt contains at least one metal selected from the group consisting of silver, zinc, and copper. A headdress article having the fiber for artificial hair.

Abstract: A lug groove and a sipe formed in an outside shoulder land portion are inclined in a first predetermined direction, a lug groove and a sipe formed in an outside second land portion are inclined in a second predetermined direction. A lug groove formed in a center land portion is inclined in the second predetermined direction, a sipe formed in the center land portion is inclined in the first predetermined direction. A lug groove formed in an inside second land portion is inclined in a first predetermined direction, a sipe formed in the inside second land portion is inclined in a second predetermined direction. A lug groove and a sipe formed in an inside shoulder land portion are inclined in a first predetermined direction, the lug groove formed in the inside second land portion and the lug groove formed in the inside shoulder land portion are formed by offsetting.

Abstract: In the pneumatic tire, the ratio TW/SW of the ground contact width TW of the tire and the maximum width SW of the tire is 0.75 to 0.95. The tire width direction outside end of the belt layer extends in the tire circumferential direction and is positioned outside in the tire width direction than the circumferential direction groove formed most outside in the tire width direction. A width direction sipe extending in the tire width direction and closest to the tire circumferential direction end portion of the block and a width direction sipe adjacent to the width direction sipe and extending in the tire width direction are formed in the block, and a distance from the tire circumferential direction end portion to the width direction sipe along the tire circumferential direction is longer than a distance from the width direction sipe to the width direction sipe along the tire circumferential direction.

Abstract: A pneumatic tire having a specified mounting direction with respect to a vehicle, the pneumatic tire including: an inner main groove on a vehicle inner side and an outer main groove on a vehicle outer side, which are provided in a tread surface on both sides of a tire equator; and an inner circumferential direction groove that is provided between the inner main groove and an inner tread surface end and that has a smaller groove width than the inner main groove and the outer main groove, wherein an inner side land portion is defined between the inner main groove and the inner circumferential direction groove, and an inner shoulder land portion is defined between the inner circumferential direction groove and the inner tread surface end, and wherein, if L is a distance from an outer side wall of the inner main groove to the inner tread surface end, M is the groove width of the inner circumferential direction groove, and N is a width of the inner side land portion, a value of the groove width M divided by the di