This is a pen that uses a gel based ink.
Style Fit pens are also available with single colors, and this slim pen features super-smooth gel ink in sky blue, with a fine 0.38mm tip. It can be refilled with any Style Fit pen refill regardless of tip size, including gel, ballpoint, and mechanical pencil refills. You can find the refill options below:
To load in new refills, simply remove the refill from its case, twist and remove the lower portion of the pen body, slip the refills into the holes inside the pen body, then twist back on the lower portion of the pen body and you're ready to use your Style Fit pen!