"POLY SLEEVE SMALL; 40 IN. W. X 48 IN. L. X 30 IN. D.; WEATHER PROOF, TOUGH, DESIGNED FOR USE WITH UNI-PAK TOP NSN 8115-01-444-0211 AND PALLET BOTTOM NSN 8115-01-444-0206; DROP PANEL INCLUDED TO PROVIDE EASY ACCESS TO EACH CONTAINER EVEN WHEN STACKED; GREEN STATE OF THE ART STORAGE/SHIPPING SYSTEM IS CONSTRUCTED OF POLY PROPYLENE SLEEVE, WORKS GREAT WITH THE PLASTIC TOP, AND A PLASTIC BOTTOM PALLET (WITH FOUR-WAY ENTRACE CAPABILITY); THE SLEEVE CAN BE LOCKED WITH BOTTOM PALLET AND TOPTO CREATE A RIGID AND SECURE SYSTEM, ELIMINATING STRAPPING AND STRETCH WRAPPING; HIGH DENSITY POLYETHYLENES BUILDFOR REUSABILITY AND MANUFACTURED OF 60 PERCENT RECYCLED MATERIAL"