Puff

Breathe deep and prepare to sail like the wind, with the sweetest puff of air in all the atmosphere—part of the Science Pals series, including Drop: An Adventure through the Water Cycle and Ray: How Light Works

Look who just blew in! Meet Puff. He's air. And he's a gas! Puff has been here for billions of years, forming a blanket of protection around Earth to hold in heat and keep out cold. Puff is key to life—he's the air we breathe and the wind around us. And he's got talent! Have you ever incinerated a space rock? Traveled from the highest heights to the deepest depths of the sea? Or spun through a tornado? Puff has! He'll tell you all about it. With refreshing wit and breezy one-liners, Puff takes readers on an airy adventure through the atmosphere, earth, water, and you. Filled with irresistible artwork, funny asides, and a gentle current of kid-enticing facts, plus endpapers that reveal even more of what air is and how it moves, Puff is the breath of fresh air we’ve all needed.

"Fresh and breezy.” —Kirkus
"Cheerful [and] easy to understand." —Booklist

Standard and Primary covers are widely available through general retailers. They often have higher print runs and can be cheaper, especially during sales.

In contrast, Direct Market (DM) and variant covers are primarily sold in comic shops. DM editions tend to have more limited availability and may be more valuable to collectors.

The main differences lie in artwork style, availability, price, and collector appeal. Ultimately, the choice between standard and variant covers depends on personal preference, budget, and individual collecting goals.

Comic book enthusiasts have various formats to choose from when collecting their favorite stories.
Here's a brief overview of the main types:

Omnibus

• Large, hardcover collections
• Usually contain complete runs or extensive story arcs
• Typically 800-1000+ pages
• Higher price point, often €100-€150

Oversized Hardcover (OHC)

• Similar dimensions to omnibus, but thinner
• Collect shorter runs or story arcs
• Usually 300-600 pages
• Priced between €30-€50

Hardcover (HC)

• Standard-sized hardcover books
• Collect 6-12 issues typically
• Similar dimensions to single issues, but with a hard cover
• Priced around €25-€35

Trade Paperback (TP)

• Softcover collections
• Standard comic book size
• Usually collect 4-6 issues
• Most affordable option, typically €15-€25

Other Formats

• Absolute Editions: Oversized, deluxe hardcovers (mainly DC Comics)
• Compendiums: Massive paperback collections
• Graphic Novels (OGN/GN): Original stories not previously released as single issues

The choice between these formats often depends on personal preference, budget, and collecting goals. Omnibus and OHC editions offer larger artwork and more content but at a higher price, while TPs provide a more affordable way to collect complete story arcs