They are made of non-porous material that is naturally easy to disinfect but is also known for its resistance to odors, which some silicone can hold onto, even after boiling. For folks concerned about any scents left behind, stainless steel can make the difference between wanting to engage in anal play and actually doing it. (And loving it). (Learn more about getting anal in Butt Play: Your Ifs, Ands and .... Butts.)
OK. But here's the question: What size do you buy for a butt that's not yours?
Small is great for people who are fairly new to anal play but are looking for a new sensation, although I would recommend a squishier material for a first-timer. This size is small enough to slide in easily but is still very noticeable because of its firmness. For more advanced ass-letes, this one might be necessary for days when your muscles are tense from stress/work/kids and the other ass play obstacles in our lives. Small is the perfect "square one" for all types of asses.
Medium, the most versatile size, is a best bet for folks who have plug experience and are waiting for what's next. This is the one I use most often and the one most borrowed by my partners (wash well between people!). This size is comfy for me because it stretches gently, making its presence known without really pushing my limits. It's for one of those nights when I'm pretending my apartment is a dungeon even though we all have to get up for work in the morning and don't actually have that much time.
Large is for when you want to pull out the big guns and would work best for folks who are familiar with using anal toys and know they enjoy a wide stretch with their penetration. Do not buy this for someone who is just curious about ass play or has only had a finger up there. This plug as a gift is a statement and one you should make very sure will be well-received. That being said, if you give this to the right person, it has the potential to occupy you both right through the New Year.
Here's one all wrapped up for your (anal) pleasure
Anal play isn't for everyone (just like any other type of sex), but if you're thinking of investing in one of the best and most beautiful toys you will ever put in someone's butt, the Pure Plugs may very well make your holiday shine.