Circles Within Circles Optical Illusion The image here appears as if it's pulsing to us. Look really hard and you can see the black and white colors in the image that work to make it look as if it's moving.
so down to try these' Mercury Skate - rollerblades designed with an anti-shock system for a smoother ride on the pavement and to decrease skater fatigue. Improved ability to accelerate faster and gain higher speed. Line skates