This square hot tub cover is made of durable silver aluminum film composite fabric, which reflects sunlight and resists rain, dust and outdoor debris to protect your spa all year round. Equipped with front and rear air vents to reduce moisture buildup, each vent comes with a sturdy black webbing handle for convenient lifting. The heavy-duty securing system includes a central black webbing strap, eight wide diagonal sewn tabs and alloy buckles. Diagonal bottom buckles adopt triangular fabric reinforcement for enhanced tensile strength. The adjustable bottom drawstring helps cinch the cover snugly; no splits or adhesive on diagonal corners. It folds neatly, with packaged dimensions within 38 by 28 by 15 cm, ideal for backyard outdoor hot tubs.