Most four-season tents are only meant to be used in the fourth season, but not the Kunai. “It’s light enough to justify carting around in the summer, but it’s bomber enough for winter mountaineering expeditions,” says our Colorado tester. NEMO opted for a single door to shave weight, as well as a more minimalistic pole structure (a brow pole and only two cross poles instead of the more standard three). The floor plan feels snug at only 27 square feet, but headroom, at 42 inches, is good for a tent this size. On the flip side, the compact profile is perfect for enduring high winds in alpine environs. And guyline attachments pass through the fly and attach directly to the tent frame, making the Kunai a fortress when staked out. Walls are solid nylon to increase warmth. Two vents enhance airflow, but we had some condensation on rainy, near-freezing nights in Rocky Mountain National Park. Bummer: The 7-square-foot vestibule is tiny.