Put this in my Dianese Rainsun D Dry jacket.
I bought this because I have 2 Dainese jackets which did not come with a back protector. I had bought one previously, but was constantly changing it back and forth between my Air jacket and my leather jacket.
I'm happy with the back protector. Luckily, I haven't had to test how well it works, but it's well designed and manufactured. The sizing was tricky. I bought it to fit in my Dainese jacket, and you would think Dainese would say a Euro size 52 jacket takes xx size back protector. Instead they have you measure from your waist to your shoulder and my measurements were off the chart, so I guessed the M2 was the right size. I guessed right, but it I shouldn't have had to guess at all.
Fit in my alpinestars medium jacket fine. Doesn't move around. So far so good
There have been no questions asked about the Dainese D1 Manis Back Protector Insert.