Coleman is one of the most trusted brands in outdoor gear and probably the one that comes to mind to most people when selecting a tent.  They offer a wide array of tents that meet the needs of almost any size camping group.  3 Man tents are ideal for a solo camper who wants a little more space than a traditional 1 man tent or can be used by two campers also hoping for a little more room than a 2 man tent will offer. 
Here are three options for a three man tent that all come equipped with their exclusive WeatherTec System and Variflo ventilation.

Coleman Sundome 7 foot by 7 foot 3 person Dome Tent
$59.99
This one room, 3 man tent is protected with Coleman’s exclusive WeatherTec System.  This is a great system that they guarantee will keep you dry.  The rain fly is designed to go over the tent, as well as, the door and windows.  The tent itself has leak free seams.   Its two shock corded poles are easy to set up and has continuous pole sleeves.

The bottom line with this tent is that it is a great option especially for those who don’t camp often and just want a durable tent that will last and keep you dry.  One drawback is that while its airflow system is great for increasing ventilation in warm weather you can’t close off this system in colder weather.  However, casual campers won’t be disappointed with the Coleman Sundome which also is available in other sizes.

Coleman Hooligan 3 Tent
$69.84  (List price $89.99)
This Coleman Hooligan tent is also protected by the WeatherTec System.  Its dimensions are 8 foot by 7 foot so it’s slightly bigger than the tent mentioned above.  This is a completely mesh tent but also comes with a full rain fly that can completely enclose it.    So if the weather is really hot and dry you have the option to keep it off.  If you know its going to rain just cover it with the fly.  This type of rain fly is a great option for backpackers although setting up the fly will require more work and be a little more tedious.  This is also a two pole dome tent and is pretty easy to set up.

Coleman Sundome three to four person 9 foot by 7 foot dome tent
$70.92

Of the three Coleman tents in this post this is the largest so will be the best option if you really want to fit three campers and some gear.  It includes the same protection as the others against wet weather and has the same ventilation.  However, this is an older model and while you can find it sold by some retailers it is going to be found in a limited supply.

Bottomline:
If you are looking for a durable tent you will be pleased with any of these choices.  They are great, cheap tents that can keep the casual camper comfortable and happy during their time outdoors.  As I say with buying any tent, it’s always good to practice setting them up at home before you get outside.  Also, it never hurts to waterproof it further.  Getting a good footprint will keep the water from getting in from underneath.