My experience with Phallosan Forte (the product AND the company) have been very mixed.
My first impression of the product was that it was pretty flimsy, and way too awkward to put on my private parts.
Another gadget gathering dust, for weeks.
I retried, off course. With some perseverance, I found that I could use the extender for hours on end.
And it really seems to work!! My dick grew a little in size, mostly girth, in the first week.
Now for the bad part. The “condom sleeves” tear way too easily. I actually tore three sleeves in one hour, and I am very careful with them.
So far no reply from Phallosan the company to solve this problem, after two months. It seems a rip-off. They must be aware of the problem, but hide away in a cave in Malta. A very luxuriously decorated cave, going by the cost of their plastic contraption.
I have read the advice on alternatives for the Phallosan sleeves here.
I have gotten thicker 0.1mm German made condoms, see if that will work somehow .