The Double Decker is a great way to add some spice to your love life, and is a great toy for any man to own. If you want to make your woman absolutely scream, the double high-powered bullets are almost guaranteed to get the job done. It's super stretchy and can be used as a simple O-Ring or o-ring/ball harness combo.

The Double Decker is made of TPR Silicone and is super stretchy. It will easily fit anybody and is strong enough to stretch around your balls easily. It's got no noticeable smell, is very smooth and comfortable and the bumps all around it add extra stimulation for your woman.

The Double Decker is a really basic shape with a bullet on top and bottom, but it's easily adjustable and worked really well at hitting Mrs. Nakana's favorite spots. It's stretchy enough to fit absolutely anybody and very comfortable. There's nothing terribly fancy about it, but it knows what it was designed to do and does it perfectly.

The Double Decker only has three speeds. Powerful, Extremely Powerful and On-the-spot Orgasm mode. The bullets are each individually controlled with just one button on each, but the simple controls allow for each partner to customize how intense their experience is. The lowest setting on this toy is easily comparable to a high vibration setting on many other toys, and each successive setting nearly doubles the power of the one below it.
Once again, no frills or fancy patterns, but the Double Decker was designed to do one thing and do it well. Produce massive orgasms!
My biggest problem is that each bullet contains three watch batteries and only has about a 90 minute life-cycle, so be prepared to spend a lot on battery replacement if you plan on using this toy frequently. A six pack of the LR44 batteries from Eden is $4.

The TPR silicone is extremely easy to clean with just soap and warm water after use. Let it dry and store it in a ziploc bag and it's good to go until the next time you want to play.

Mrs. Nakana and I both absolutely loved this toy from the second I put it on. It's very comfortable and extremely easy to make it hit her clit and other sensitive areas no matter what position we're in. At just $25 it's well worth the money and has the power of many more expensive devices. Big thumbs up from both of us!
However, if you're looking for something to actually help you maintain an erection longer than normal, this might not be the toy for you as it's so powerful, you're going to cum hard and won't be able to fight it too long before it happens.