Iphone Line Protector

I has designed two kinds of line protector,and which kind of type do you like better?
The type-B can avoid sliding when we pull the line out of the USB.
I'll try my best to design the other side protector.
Please look forward to it!
Happpy Merry Christmas~

........Upload Lightning Protector.........(2016.01.02)
The lightning protector has been uploaded.
I designed a leaf spring to avoid sliding on the protector.
Therefore we can press the spring when we pull the line out of the Iphone.
Hope you like it!

Layer height:0.1mm
Support type:None
Platform ashesion type:None