What's the difference between the Ultimate and Pro lines, you ask? Both collections have four-season, 100% cotton canvas (with UV and rot protection), a zip in/out rip-stop groundsheet, mesh doors, and roll up side walls. The Pro series is the most popular canvas tent with upgraded canvas and heavier duty poles and stakes. The Pro tent is designed to last and is best suited for glamping and longer-term use, whereas the Ultimate line is ideal for recreational use and weekend getaways. And the ProTech collection has the added bonus of 360 degree mesh walls (under the canvas). Compare all the features of our tent here