Soft mounting motors is a legitimate and practical way of reducing vibrations from the only moving parts on your miniquad/multirotor. Even your top of the line motors will eventually start to wear and produce vibrations that can cause issues with your flight controller. So if you aren't sponsored or have money to burn on a new set of top of the line motors or even if you want to make your old chitty motors feel buttery smooth, you should try out these custom cut silicone motor soft mounts. 
1 set = 4 mounts

Specs
1.5mm thickness  
Ø 25mm Diameter
16x19 mounting holes (common for 22XX motors)
Only available in RED right now because red makes everything go fast...