The 2' x 2' Corner Tube is a specialized winterizing tool designed to add extra stability and weight to your pool cover during the winter months. Its unique corner shape fits securely into the edges of the pool cover, preventing it from shifting, sagging, or blowing away under the pressure of snow and ice. Made from durable, heavy-duty vinyl, this corner tube can withstand harsh winter conditions and provide targeted weight distribution where it’s needed most. Easy to use; simply fill with water and position in the corners of the cover to ensure your pool stays safe from debris and freezing damage.