Delta expanding in-flight pajamas

In another move to cater to high-spending travelers, Atlanta-based Delta Air Lines is giving pajamas to international business class passengers on more flights.

The Delta "Sleep Suit" is available in two sizes (small/medium and large/extra-large) for passengers in Delta One class on Seattle-Shanghai, Detroit-Shanghai, Seattle-Beijing, Detroit-Beijing and Seattle-Hong Kong flights starting this week.

Delta first launched the pajamas in December 2015 for Delta One passengers on Los Angeles-Sydney and Los Angeles-Shanghai flights.

The international business class seats in Delta One class recline into full flat beds, and also come with a Westin Heavenly duvet.

Where else might passengers wear their Delta pajamas? The airline says customers are "encouraged to take the outfits with them to wear at home, in their hotel or on future Delta flights."

If you haven't had a chance to fly international business class lately, you might also find Delta pajamas on eBay. Bloggers and others have waxed eloquent on the virtues of airline pajamas.