Spent months trying to find a way to lengthen my 2018 Liberty150i's mirrors - which are too short when I'm wearing my winter riding gear. Extensions, fish-eye mirrors, bar ends, etc. did not suit me at all, for various reasons.
But may have found something that works. Bought a set of these 2" wide, elastic, reflective arm bands. I put two of them around my jacket's upper sleeve to compress the fabric - and with 4" band of jacket tucked in I gained back some rear vision!
At a bit over 6'3'' and 255 lbs, when I layer up for winter riding the rear vision is g o n e!
No more!
Thought other winter riders might be having a similar problem.
Stig