"The Hot Colleagues"

"The Hot Colleagues" is three plugs rather than one, in ascending sizes, which is the sensible way to start if you've never used one. Satisfyer's own site has 648 ratings on the set and an average of 4.9 out of 5.

Each plug is a different shape: a twisted spiral, a narrow cone and a run of spheres. They're medical-grade silicone, soft enough to give a little under pressure, and every one ends in a ring. That ring is both the handle and the stop, so nothing can go further than you want it to.

Use plenty of water-based lubricant, because the body doesn't make its own there. Start with the smallest, go in slowly, and stop if anything is uncomfortable. All three are rated IPX7 waterproof, and Satisfyer's warranty on the set is 15 years. One thing to plan for: the ring sits outside, so it's noticeable if you sit down while wearing one.