The Alterno is advertised for both anal and vaginal stimulation. You can also play with it in ways that stimulate the skin, like gentle whipping. The unique shapes of the beads make this a great toy for someone looking for something a bit more exciting than your traditional string of anal beads. The color and overall appearance is lusty and sinful.

The SinFive Alterno is made of WTP, a non-porous thermoplastic. It's odorless and firm, yet soft to the touch, similar to the feel of 100% silicone toys. The red matte color fits in well with the whole modern yet sinful marketing of SinFive products.

I chose this toy because of its extremely unique design. Instead of regular spheres that you would find on a typical string of anal beads, the Alterno has a different geometry. The 7 total "beads" comprise two oblong, pill shapes, two spheres with textured nubs, two spheres with rings and a huge center piece of two perpendicular discs. With so many beads and a handle at one end, this toy measures a 18 inches! Fifteen of which are insertable. This is a toy for the experienced anal enthusiast, what with the length, bizarre textures, and large center bead.

I found the first couple of beads to be very arousing, but the center bead was just a bit too overstimulating with its design and size. The length I just found impossible to even attempt fully. Only a truly highly experiences anal connoisseur could take all 15 insertable inches of the Alterno. Make sure you are nice and relaxed, and well lubed, before trying this toy! You might even want to warm up with your fingers or a smaller anal toy first.

Since this toy is made of WTP, you only need a bit of warm water and anti-bacterial soap to use it. However, you have to be careful to clean all of the edges of the designs on the beads. I would recommend using a condom, if you want to share it with others. You can use any standard lubricant that is not oil-based with the Alterno. After cleaning and drying, I store mine in the original box that it came with.