Cashmere 18 inches clip in hair extensions in color 1B black brown. Used once. Retails at $239.95

From their website

Color Description
Black Brown (1B)
Transform your hair with Black Brown hair extensions. This beautiful shade is a soft black shade with just a hint of dark brown undertones, often referred to as a soft black. If your hair color looks black in most lighting situations, but in the sunlight, it looks very dark brown, this is the shade for you.

Classic Clip In Hair Extensions
We believe our Classic clip in hair extensions are a ‘classic’ for a reason. They are our first design, and are the exact extensions that we appeared with on SHARK TANK in 2013.