Oliver Munday, the prolific book cover designer, uses Keep on Truckin NF, which is a digital revival of Baby Fat Black and Buxom. The smaller text is hand-rendered.

The publisher describes the book:

The New York Times best-selling author of The Nix is back with a poignant and witty novel about a modern marriage and the bonds that keep people together. Mining the absurdities of contemporary society, Wellness reimagines the love story with a healthy dose of insight, irony, and heart.

The design here is a clever nod to the previous book by Nathan Hill that Oliver had also designed, The Nix. Both use bright colors, handwritten lettering, a halftone image, and blocky/dimensional center-aligned typefaces.