With alternating solid and sheer vanes it allows easy light control while dressing the window in a distinctive aesthetic. It was cleverly designed back in the mid 2000’s to cater for those who did not like the fact that Roller Blinds are either up or down. Due to its design and fabric structure, Dual Shades are a delicate product that is not as durable as regular Roller Blinds and need to be used with a little more precaution.