The two-person MontBell Crescent 2 is a "hybrid tent" - one side is double wall and the other side is single wall. It's supported by a single longitudinal pole.
Montbell's new hybrid Crescent 2 tent is supported by a single length-wise pole similar to their now discontinued Hexagon two-person double wall tent. However, the Crescent 2 is a single wall tent, with a twist: one side of the tent is double wall (with a mesh body and a waterproof fly on that side) and the other side is single wall. Technically, it's a hybrid tent, since part of it is double wall.
Views of the Montbell Crescent 2. In the head end view (top left), the right side of the tent is double wall. The entry is through a zippered opening in the fly on the right side of the pole. The foot end of the tent (top right) has a high vent. A side view of the single wall side of the tent (bottom left) shows how the canopy extends the drip line out away from the tent. The top view (bottom right) puts all this into perspective; the top of the photo is the double wall side of the tent.
The unique feature of the MontBell Crescent 2 (besides its monopole design) is that the fly on one side of the tent can be rolled up in good weather to provide abundant ventilation and views. The left photo shows the tent with the fly staked out, and the right photo shows the fly rolled up.
By the numbers, the Crescent 2 is a roomy tent. The floor is 96 inches long and 59 inches wide, and headroom is 43 inches at the center. Area is 34 square feet. However, usable space is another matter. Since the tent hangs from a single length-wise pole, the side walls drape inward substantially, greatly reducing inside volume. With two people inside the tent, the occupants are constantly brushing against the tent walls with their heads and shoulders. The limited elbow room is not a real problem in good weather, but is not pleasant in rainy weather when the inside tent walls are wet with condensation.
Entry is through a small zippered mesh door on one end of the tent (left). The door is barely shoulder width and is accessed through a zippered opening in the tent's fly on the right side. Seen from the inside (right), the door has a wrap-around zipper so it can be completely opened and pushed to the side out of the way.