Everything you need to start exploring the delights of anal sex! This kit includes small butt plug, medium butt plug, large butt plug, and a vibrator to add to the fun. It also comes with a bottle of Anal Lube. The small butt plug is 4 overall length with 3.5 insertable. Just under .5 thick (1.5 around) to .75 thick (2.5 around).The medium butt plug is 4 overall length with 3.75 insertable. .5 thick (1.75 around) to just under 1 thick (3 around). The large butt plug is 5.25 overall length with 4.75 insertable. .75 thick (2.75 around) to 1.5 thick (4.75 around). The vibrator is 9.25 overall length with 7.5 insertable. 1 thick (3.25 around) to 1.5 thick (5 around). Requires 2 AA batteries, not included.