Four and a half pounds is what makes this one genuinely portable - it lifts off a raised bed and moves to another row without dismantling. The tunnel measures 47 x 21.5 x 24 in, low enough to sit over a garden bed or a balcony planter, with a 40 x 30 in zippered door that rolls back for watering and picking. The cover is tear-resistant, waterproof PE grid over an E-coated metal frame, so rust does not creep in where the tubes meet the soil. It extends the growing season at both ends, protecting young lettuce and herb starts from a late frost in spring and a cold snap in fall.