A Tent Isn't Supposed to Keep You Warm.
And your tent is the shell layer. Just like with shell clothing, the tent isn't supposed to keep you warm. Instead, it indirectly keeps you warm by blocking wind so heat isn't lost from the mid layer. The shell also keeps you dry so you don't get cold from evaporative heat loss.Recommend some easy-to-use Camping Tents, click to buy if you like.