BJD

Ball-jointed doll, also Ball Jointed Doll or BJD, is any doll that is articulated with ball and socket joints. There are roughly three main size categories for BJDs: full size, mini and tiny.

• Large full size dolls, sometimes referred to as SD size from the Super Dollfie size range, are around 60 centimetres (24 inches) and roughly 1/3 scale.
• Mini size dolls, sometimes referred to as MSD size from the Mini Super Dollfie size range, are about 40 cm (16 inches) tall. There are two major categories of minis: those that are roughly in the same scale as the 1/3 full-size dolls, and mature or slim minis that are in 1/4 scale.
• Tiny BJDs are under 30 cm (12 inches) tall. They are available in many different types and scales: Yo-SD (25 cm / 10 in); 1/6 scale (about 21–30 cm / 8–12 in) tall. Humanoid anthro animal BJDs are usually in the tiny size scale; the tiniest BJDs are about 10 cm (4 in).