The Colt(TM) Anal Trainer Kit entails three firm, pliable, and tapered butt plugs, which range in size from 4.75″ x 1″, 5.5″ x 1.25, and 6.5″ x 1.75″. The rubber butt plugs are the perfect trainer, providing incremental stages from small to medium to large. Let the training begin!