This butt plug trio is perfectly sized for beginners, and features a easy insertion, each plug has a curved, ergonomic base to help keep it in place and remove easily. The firm yet flexible material is slick with just a hint of give, and is phthalate-free and cleans easily. Smooth plug: 4.5 inches in total length, 4 insertable, 1 inch in diameter. Bubble plug: 4.5 inches in total length, 4 inches insertable, 1 inch in diameter. Single bead plug: 3.75 inches in total length, 3.5 insertable, 1 inch in diameter.