Colorful YA Novel Series on a Shelf — Postcard

A row of paperback spines in beach-bright colors — teal, coral, orange — belongs to two YA series by Robin Jones Gunn: the Sierra Jensen Collection and the Christy Miller Collection, each cover marked with its palm-tree logo and volume number.

A nostalgic pick for anyone who grew up trading these books, or for a card tucked inside a care package for a teen reader today.

• Format: 10 × 15 cm
• Paper density: 350 g/m²