The Summer sunflower shades are heavier than a regular pair of sunglasses, however, they are still comfortable to wear due to adaptations made such as broader silicone nose pads. You can also add nose guards to ease the wear. 
 
I recommend to get used to wearing these art sunglasses little by little, to wear them for shorter periods in the beginning to get used to the weight. Let your body adapt, it's like learning how to walk in heels.
 
Even if the adornments do not hinder the vision, I do not recommend the you drive a car while wearing these beauties. Leave that to someone else or remove when driving.