Rhino Genesis, Sleek, & Stampede Silicone Penis Extensions Reviewed

Editor's Pick - Best Male Sex Toys

These cock extensions are available in vanilla, cinnamon, and chocolate with the exception of the sleek which is also available in glow in the dark.

The items arrive in the same packaging. You can’t tell the different between the items until you see the names on the side or open them to view their noticeable size or textural differences. The packaging is very basic with some useful information about your product, but the most useful information is found inside on the instructions to unleash the beast.

The Instructions to Unleash the Beast

• The Rhino has three pieces: the Rhino penis extension, sizing core, and a no slip grip tip plug.
• Sizing your Rhino
• The sizing core is designed to fill the space between where your penis ends and the end of the Rhino.
• The sizing core is scored for easy trimming with a pair of scissors - trim it to complement your particular length.
• Once trimmed, add a drop or two of lubricant and insert sizing core, pushing it all the way to the top of the Rhino.
• For more sensation, add some lubricant to your penis and slide it in from the bottom opening. You can also trim the Rhino’s overall length with scissors, if desired.
• Once your penis is inserted into the Rhino, grab the base of the Rhino, squeezing out any excess air, and then insert to the no slip grip tip plug.
• Add lubricant to the outside of the Rhino and you are ready to enjoy the Rhino.
• When ready, remove the Rhino by simply removing the no slip grip tip plug. This releases the vacuum seal.

The Rhino’s are made of the highest medical grade platinum silicone. Making it non-porous and body safe. It’s definitely a grabby material, which will require lube in order to use it. Lube for both the wearer and the receiver.

The Genesis

The Genesis was nominated by XBIZ as best male sex machine of 2015. This extension is smooth with only the slightest appearance of a phallic head. Inside the Genesis is ribbed in order to slide the sizing core in easily and to provide a vacuum seal. The measurements on the Genesis are 8" of length and a 2" diameter with an opening that has a 1.25" diameter, though, it does stretch some and an insertable length up to 7.5".

The Sleek

The Sleek feels just like the Genesis on the outside. Meaning it is smooth with only the slightest phallic head. Again, the inside of the Sleek is like the Gensis - ribbed to create the vacuum seal and to fit the sizing core. The Sleek is 8" in length and has a 1.25" diameter with an opening that with some stretch and an insertable length up to 7.5".

The Stampede

The Stampede isn’t as smooth as the Genesis and the Sleek. It’s smooth with the slightest feel of skin. Inside it is ribbed to provide the vacuum seal with the sizing core. The Stampede measures 8" in length with a 2" diameter and an opening with a 1.25" diameter with some stretch and an insertable length up to 7.5".

In order to clean your Rhino after use, be sure to remove the no slip grip tip and the sizing core. Since all of these items are made of silicone - you can wash them with soap and water or a toy cleaner. Though, if you want a thorough cleaning - you need to wash them with a 10% bleach solution or boil them. Pulling out the sizing core is a pain, but if you fold the edge of the Rhino over enough to grip the core, you can pull it out easily.

Out of all the items I’ve ever tested, these are my first cock extensions. Not sure why we’ve never purchased them. Jamie isn’t always a fan of male sex toys. I don’t blame him since the majority of male sex toys are made of very questionable materials that tend to smell horrible. So when I am offered a male sex toy that is made of silicone for review purposes - I always agree to review them since there is a serious need for these reviews.

The most frustrating part with these extensions is inserting and removing the sizing core(s). You need a lot of slippery lube in order to do this part. Another frustrating part is trimming to size. If you don’t have something extremely sharp - you will not have a smooth edge. You should use something like an xacto knife.

We had some trouble sliding the extension over his cock. He’s just under 8" so no trimming or sizing core is needed for him to wear the extension. He already has a decent girth, 2" diameter (2.25" at its fullest potential), so these sleeves just add extra girth to him. In order for me to be able to handle this, I have to be extremely aroused and work up to the larger size. Lube really helps. We prefer to use Spunklube Pure Silicone because it stays slick and feels the most natural. We’ve not had any adverse affects with silicone based lube breaking down the silicone of the Rhino’s. Once we are able to get going, I enjoy myself. I like the Stampede the most because the texture to the outside makes it feel more natural. The Sleek and the Genesis are grabbier and require a lot more lube. While Jamie does enjoy using these extensions and they do all him to last longer, but it’s not as stimulating of an experience for him as it is for me. I guess that’s why it makes him last longer than normal, though. These extensions are not just extensions. They can also be used on dildos to enhance the size and they can be used as a masturbator. The internal texture pulls and grips around the shaft of the cock which according to Jamie feel nice so as long as there is enough lube. Overall, we both enjoy these extensions and we’ll continue to use them.