Kaweco Perkeo Indian Summer Fountain Pen 2 Pack Bundle In Yellow Black Size:OS Translucent Swoosh detailing and Blue Translucent Swoosh detailing and Blue Ribbon Studio branding round out a colourway built around up cycled market materials rather than a standard leather build for added cushion and response specifically: Kaweco Perkeo Indian Summer Fountain Pen with a Fine Nib (10001312) Kaweco Perkeo Indian Summer Fountain Pen with a Medium Nib (10001313) Here are the details for these pens: Color: Black Yellow Features: Dark blue finished steel nib Triangular ergonomic grip section Snap on cap Body Material: Plastic Capped or Retractable: Capped Snap On Clippable: No Converter Included: No The design elements include an 8 sided cap and a 16 sided shaft creating a harmonious aesthetic