If you're thinking about using a strap on, you'll need a harness first. They come in different materials, sizes, and some have one ring, while others have two. If you want to try double penetration or experiment as a man, a two-ring harness is ideal. You can use one ring as a cock ring and the other to attach and use the toy. The harness is what holds everything in place, and they all work similarly, with just the number of holes being different. There are lots of options for dildos you can use with your harness.
Hollow Strap On
The hollow strap on model is different from all the other types as it's designed for men to wear. It usually comes already attached to a harness, so the man can step into it like putting on pants and then slide the sleeve over his penis. This model also has shapes that are intended to stimulate the female partner in various ways. For example, you can choose a dildo with a curved tip for G-spot stimulation.
Double Strap On
The double strap on works a bit differently than a standard strap on dildo because it has two pleasure shafts. This allows you to penetrate your partner anally and vaginally at the same time. Additionally, the way it attaches to a harness is different because a toy like this requires a harness that can hold two toys at once.
Strap On with Suction Cup
Another good option is a strap on with a suction cup. This type is great for use with a harness that doesn't have a standard ring or for quickly changing between different attachments. One advantage of this type is that you don't always need to use it with a harness - the handy suction cup allows you to attach it to a surface and enjoy solo play.