Protex Pro/Gro consists of a 4-in.-dia. solid tube, made of recyclable polyethylene. Each tube resembles a miniature greenhouse by trapping moisture, raising humidity and temperature inside the tube, and expediting photosynthesis. Also protects tree from small rodents, insects, and effects of excessive wind. Select from 6 heights: 18, 24, 30, 36, 48, or 60 ins., which weigh from 3 to 11 oz. Companion latch hasp links 2 or more tubes to expand diameter around tree. Optional cable ties accept various stakes for additional support.