These Jetstream Ballpoint Pens are part of the Limited Edition Happiness Colors line that launched in June of 2021.
The Happiness Colors line is supposed to reflect colors and motifs that an "refined adult" might like -- think muted colors, sleek silhouettes, and gold. It features single-tone, muted colors, and champagne gold accents on the barrel. The ink uses the popular Jetstream ink, which is low-viscosity and oil-based ink. It dries fast and allows you to write thick, clear lines smoothly.
These Jetstream Ballpoint Pens come in 3 limited edition colors: Cream Peach, Milk Cocoa, and Pistachio Yellow.