The latest edition of the Good Sam RV Travel & Savings Guide is now on sale.

The guide, a huge 1,535-page campground directory, is produced by Camping World Holdings, the parent company of the Good Sam Club as well as Camping World RV dealerships and, now, Gander Outdoors retail outlets.

The annually updated publication provides information on more than 12,000 campgrounds, RV parks and services, including data on more than 2,200 Good Sam Parks. The 2018 edition includes 424,260 campground, rating and map updates.

“All listings feature Good Sam’s trusted ratings, annually reviewed, so you can easily find the best parks with the amenities you want,” said Marcus Lemonis, CEO of Camping World Holdings and host of CNBC’s “The Profit” reality show.

The guide features a detailed description of campground’s sites, including a “Big Rig” designation for those designed to handle larger RVs. Descriptions also detail what hookups are available at a site and whether Wi-Fi is accessible.

Coming in at 3.6 pounds, the thick guide also includes $1,000-plus in savings at Camping World SuperCenters.

The Good Sam RV Travel & Savings Guide is on sale at Camping World SuperCenters and on the Camping World website at www.campingworld.com.