Small:

Length: 5.25 inches

Tentacle A Useable: 4.5 inches

Tentacle A Circumference: 4 inches

Tentacle A Width: 1.75 inches

Tentacle B Useable: 4 inches

Tentacle B Circumference: 4 inches

Tentacle B Width: 1.75 inches

Combined Circumference: 5.5 inches