The Bering Island voles are usually no more than 150mm long and have very short tails. Usually 1/3 or 1/4 of the body length. The ear shells are normal. The soles of the hind feet are only covered with hair near the heels, the rest are bare, and the pads are clearly visible. The size and shape of the skull varies with the species, and the center of the posterior border of the palatine bone is connected to the pterygoid process.

The upper incisors of Bering Island vole hang down or lean forward slightly There are 4 to 5 closed staggered tooth rings in front of the transverse lobe of the first lower molars, and the third lower molars all have 3 half-moon or sub-rectangular oblique tooth rings. The coat is much fluffy. The snout is short and blunt, and the ear shells are short.