Sleeve Packs are economical bulk shipping containers, lightweight, durable, returnable. We offer many standard sizes and configurations of the Sleeve Pack. The Sleeves are made of high strength, high payload Triple Wall polypropylene structural material also referred to as “honeycomb” and for the highest payload we offer Thermoformed Twinsheet sleeves. The Sleeve Pack (Megapack) is designed for optimum space utilization in the trailer and space saving of 80% on the return (empty) trip.