Thinking of getting a Chastity Device

I have been looking at devices for a while and have been contemplating getting one. I've been looking at the CB series of devices but I am not sure if it they will work.

I am shy of 4 inches flaccid and well over twice that erect. Looking at specifications for the CB series and some other devices it seems like I am pushing their limits.

Is this a legitimate concern, or are the devices more accommodating than I suspect. Are there any other devices which would be more appropriate for my size?

My experience so far

I went ahead and ordered a Chastity device aa couple weeks ago. I found a cheap curve for sale on ebay. I ordered it knowing that most likely it would be a cheap knock off, but I was hoping it would give me a taste of chastity to decide if I would like it before I invest in a better device.

The device arrived last Tuesday and was definitely not a curve. It looks like a CB-6000 but is slightly bigger. I had to wait until Wednesday to try it out since I wanted to I run it through the dishwasher twice and rinsed it with rubbing alcohol to make sure it was disinfected.

Wednesday night comes and I can't wait to try it out. I have a very difficult time calming myself down, it takes about an hour before I'm soft enough to even try. I attempted to use icecubes, cold showers and anything else which comes to mind. Eventually I get soft enough I can fit the head into the cage.

After another hour and a good amount of lube I am able to get myself completely in the cage and get it locked on. I only kept it on for about 30 minutes that day.

Since then I've become better at putting the device on, I've found that using a condom with some lube both inside and outside helps me slip the cage right on. I'm also working up the length of time I keep the cage on. I'm up to several hours at the moment.

Thus far I haven't had any discomfort and the experience has been quite pleasurable.

Thank you everyone for your advice.

I use the condom and thread it through the hole in the front of the device, that way I am able to use it to pull myself into the device. Once the device is secured in place I pull the condom out

I didn't keep it on for longer than two days. Durring one of my sessions I got an erection and it started pulling squeezing one of my testicles. Sadly I broke the ring getting it off.

I'm contemplating getting a curve or something a bit larger, but I don't want to risk getting something too small.