This is a 5 pack of black blue red orange and green 4 x .75 inch silicone rubber bands. Circumference is 8 inches. 

Perfect for wrapping up things!! These are silicone, cooking grade, heat/ cold/ UV/chemical resistant bands that last much longer than standard rubber bands

We measure our bands flat.  So, when pressed against the desktop, these are 4 inches, the circumference is 8 inches and the diameter is about 2.5 inches. They stretch 2-3x.

What you get:

4 x 0.75  inch flat silicone bands, circumference is 8 inches and the diameter is 2.55 inches, stretch is 2-3x.