Robelle 8 ft Pool Cover Weights 12-Pack Blue — Extra Heavy-Duty Vinyl, Double-Chamber

Robelle 8-foot double-chamber water tubes are heavy-duty vinyl weights designed to secure winter pool covers and prevent them from falling into the water.

These 12 blue water tubes are built from extra-thick, puncture-resistant vinyl and include a leak-proof valve for straightforward filling. Engineered with a double-chamber profile to resist rolling, they give a reliable, low-maintenance way to anchor pool covers throughout freezing months. Fill each tube halfway to leave space for ice expansion and avoid bursting.

How do these water tubes keep a winter pool cover in place?

The tubes act as distributed ballast along the cover edge, creating continuous weight that holds the cover down against wind and snow. Their length and doubled chambers provide an even hold so covers stay flush and don’t sag into the pool.

• 12 tubes supply linear weight around the perimeter for balanced coverage
• Double-chamber design minimizes rolling and shifting
• Extra heavy .42 mm (20 gauge) vinyl resists punctures and wear

What size and durability features should I expect from the Robelle 8 ft. tubes?

Each tube measures eight feet long and is made from a thicker-than-standard vinyl to withstand winter conditions. The material is 163% heavier than common industry options, improving tear resistance and service life.

• 8-foot length fits most above- and in-ground cover edges
• 20-gauge construction for puncture resistance and longevity
• Reinforced valve assembly designed to be leak-proof when closed properly

How should I fill and maintain these water weights for safe winter storage?

Fill tubes halfway with a garden hose to ensure room for freezing expansion; overfilling increases the risk of rupture. After filling, fasten the valve; if it’s tight or stiff, warming the valve with a hair dryer will help close it securely.

• Fill to approximately 50% capacity to allow for ice expansion
• Use a standard garden hose and the integrated valve for quick filling
• Warm the valve with low heat if it’s difficult to close, then check for leaks

Will these weights work with my specific pool cover type?

They are compatible with most winter pool covers, including solid, mesh, and safety-style covers that require perimeter ballast. Because they apply continuous weight rather than point pressure, they help preserve cover integrity across different materials.

• Suitable for mesh and solid winter pool covers
• Recommended for both in-ground and above-ground pools
• Works well with covers that need distributed, adjustable ballast

Who this product is for: Homeowners and pool service professionals seeking a durable, easy-to-install solution to keep winter pool covers secure. If you want heavy-duty, reusable ballast that resists punctures and rolling—without complicated anchors—this 12-pack from Robelle offers a proven, low-effort option backed by decades of pool-closing experience.