- Dual chambers prevent rollover
- Heat-welded leak-proof seams
- Easy-fill Valve System prevents fill mishaps Position bags before filling with water.
The middle seam creates a pivoting joint that prevents the bag from flipping. Youll appreciate the difference when you see how well your cover stays in place over the winter. Thicker for even longer lasting durability. Quality, no leak valves can be filled with water from garden hose. Water-inflate 1/2 to 3/4 full.
Item # 9959P