Part of the Big Agnes mtnGLO™ collection, the three season Copper Spur UL 3 mtnGLO™ features patent-pending mtnGLO™ Tent Light Technology with LED lights integrated into the tent body; experience ambient light in your shelter with the click of a button.. Ultra-light at 3lbs 12 oz (3 person), with two door/two vestibule design, experience comfort and convenience in the backcountry like never before.