Pool Mate 8 ft Water Bags for Winter Pool Cover, 5-Pack Classic Black — 16‑Gauge Double‑Chamber, Leak‑Proof Valves

Pool Mate 8 ft. 5-pack Classic Black water bags secure your in-ground winter pool cover by weighting the perimeter with heavy-duty, double-chamber vinyl tubes that resist rolling and punctures.

These Pool Mate water bags are designed to be threaded through the water bag loops on standard in-ground winter pool covers and filled halfway with a garden hose to hold the cover in place all winter. Constructed from robust 16-gauge black vinyl with a dual-chamber design, the tubes minimize the chance of rolling into the pool and include easy-to-use leak-proof valves. Properly filling only to mid-level leaves room for ice expansion, helping the bags last through freeze-thaw cycles.

How do these water bags keep my winter cover from slipping into the pool?

The weight of the filled water bags keeps the cover's edges firmly seated on the pool deck, preventing wind and snow from pulling the cover down. The double-chamber construction adds stability so a single puncture won’t let the entire tube roll away.

• Thread each 8 ft. bag through the cover’s perimeter loops for continuous weighting.
• Fill each bag only halfway to allow ice expansion and reduce rupture risk.
• Dual chambers prevent the tube from rolling into the pool if one chamber is compromised.
• 16-gauge black vinyl resists tears and UV exposure during storage.

How do I fill and close the Pool Mate water bags correctly?

Attach a garden hose to the leak-proof valve and fill each bag until it reaches roughly 50% capacity; this leaves room for water to freeze without bursting the vinyl. If the valve becomes stiff in cold weather, a brief application of warm air (for example, from a hair dryer) will make it easier to close.

• Place bag through the cover loop before filling to avoid awkward handling.
• Stop filling at halfway — visual midpoint is sufficient.
• Close the valve firmly; warm the valve with a hair dryer if needed.
• Inspect for leaks after filling and before heavy weather arrives.

How durable are these tubes compared with other winter water bags?

Pool Mate water bags use .33 mm (16-gauge) vinyl, which is marketed as about 107% heavier than industry standard thin tubes, so they stand up better to abrasion, UV exposure, and winter wear. The double-chamber layout also improves longevity by isolating damage to one section instead of losing all ballast.

• Heavy-duty 16-gauge vinyl resists punctures and cuts.
• Black finish helps block sunlight and slows material breakdown.
• Double-chamber design reduces rolling and isolates leaks.
• Designed and refined by Pool Mate with over 25 years of pool-closing experience.

What are the practical tips for storage and reuse after winter?

Drain the bags completely, let them air dry, and store flat in a cool, shaded area away from sharp objects to maximize service life. Rolling them loosely and avoiding prolonged direct sunlight in storage will prevent unnecessary vinyl degradation and make setup next season faster.

• Drain and dry fully before storing to prevent mold and odor.
• Fold or roll loosely and keep in a cool, dark location.
• Check valves and seams for wear before the next use and patch small leaks promptly.
• Keep a hair dryer or heat source handy for valve handling in cold conditions.

Who is this for: Homeowners and pool service professionals who close in-ground pools for winter and want a reliable, heavy-duty solution to keep covers in place. The Pool Mate 5-pack is ideal for medium to large pool perimeters where continuous perimeter weighting is needed, and for anyone who prefers a reusable, durable option over single-use alternatives.