The lack of attached sleeves on a garment worn on the upper body, often revealing bare shoulders and arms. This tag may be used alongside detached sleeves; for arms lacking any type of sleeves, use bare arms.
On pixiv, the tag アメリカンスリーブ (American Sleeve) is used to denote a kind of sleeveless clothing where the armholes are cut near the base of the neck to the lower armpit, leaving a large portion of the shoulders bare. This is also typically a sleeveless turtleneck.
Sleeveless is mutually exclusive with strapless; they should not be used together to describe the same clothing. Use sleeveless if the clothing in question is not strapless and is not designed with a low, wide-cut neckline, such as off-shoulder shirts.
The following tags implicate this tag: sleeveless_bodysuit, sleeveless_dress, sleeveless_hoodie, sleeveless_jacket, sleeveless_kimono, sleeveless_shirt, sleeveless_sweater, and sleeveless_turtleneck (learn more).