Start with the shelter core and build your Night Sky 3P system to exactly what your adventure requires with the Mons Peak IX Night Sky 3P Base — the tent body and pole architecture without the rainfly, giving experienced shelter builders and ultralight-focused crews the foundation to configure their sleep system precisely for the conditions ahead. Geodesic pole architecture delivers the structural integrity and interior geometry that makes the Night Sky a trusted backcountry shelter in serious mountain conditions. Pair with the full rainfly for four-season protection or run fly-free on clear, low-precipitation nights for maximum ventilation and star visibility. A flexible, sustainable foundation for the outdoor community that customizes their kit with intention.