Universal gears protector

This is an useful gears protector wich can be assembled on all bikes, as examples fixed, mtb, road bikes, kids' and city bikes. The function of gears protector is to not allow to mud, pebbles, water, and other entity to get and disturb the right chain, gears, and derailleurs works, and also to not allow to grease or other lubrificants to get easily lost in environment while cycling, reducing so the maintenance actions