An aquatic sports performance garment configured to reduce fatigue of a user when the garment is worn, the garment having an aquatic sports performance garment material, the garment comprising: an upper torso portion (101, 301) comprising; a left sleeve portion (102, 602) having a left shoulder region, a left armpit region and a left sleeve outer edge; and a right sleeve portion (102, 602) having a right shoulder region, a right armpit region and a right sleeve outer edge; the aquatic sports performance garment is characterized in that the left sleeve portion of the garment is biased in an arms-up configuration, such that the left sleeve outer edge extends out from a coronal plane of the garment at an angular range from about -15.0° to at least about +100.0° relative to a transverse plane transecting the upper torso at or about a top of the left shoulder region and a top of the right shoulder region, and wherein the left sleeve portion of the garment is further positioned approximately parallel to a sagittal plane of the garment, when the garment material is at rest, prior to being worn by the user, and in that the right sleeve portion of the garment is biased in an arms-up configuration, such that the right sleeve outer edge extends out from the coronal plane of the garment at an angular range from about -15.0° to at least about +100.0° relative to the transverse plane, and wherein the right sleeve portion of the garment is further positioned approximately parallel to the sagittal plane of the garment, when the garment material is at rest, prior to being worn by the user. an upper torso portion (101, 301) comprising; a left sleeve portion (102, 602) having a left shoulder region, a left armpit region and a left sleeve outer edge; and a right sleeve portion (102, 602) having a right shoulder region, a right armpit region and a right sleeve outer edge; a left sleeve portion (102, 602) having a left shoulder region, a left armpit region and a left sleeve outer edge; and a right sleeve portion (102, 602) having a right shoulder region, a right armpit region and a right sleeve outer edge; the aquatic sports performance garment is characterized in that the left sleeve portion of the garment is biased in an arms-up configuration, such that the left sleeve outer edge extends out from a coronal plane of the garment at an angular range from about -15.0° to at least about +100.0° relative to a transverse plane transecting the upper torso at or about a top of the left shoulder region and a top of the right shoulder region, and wherein the left sleeve portion of the garment is further positioned approximately parallel to a sagittal plane of the garment, when the garment material is at rest, prior to being worn by the user, and in that the right sleeve portion of the garment is biased in an arms-up configuration, such that the right sleeve outer edge extends out from the coronal plane of the garment at an angular range from about -15.0° to at least about +100.0° relative to the transverse plane, and wherein the right sleeve portion of the garment is further positioned approximately parallel to the sagittal plane of the garment, when the garment material is at rest, prior to being worn by the user.