Aulock 8ft Double-Chamber Pool Cover Water Bags — 6-Pack Black, Heavy-Duty 0.4mm PVC Weights

Aulock 8ft double-chamber water bags are heavy-duty PVC weights that secure winter pool covers on both inground and aboveground pools.

If you want a simple, durable way to keep your pool cover from blowing or sagging during winter, these Aulock water tubes offer a low-effort solution. Built from cold-resistant 0.4mm PVC with reinforced valves and a double-chamber design, each 8-foot tube is made to sit along the perimeter of your pool cover and hold it down through freeze-thaw cycles and wind events.

How do these water bags keep my pool cover stable?

The double-chamber construction adds redundancy so a puncture in one chamber won’t render the whole tube useless, and the 8-foot length spreads weight evenly along the cover edge. When filled correctly, they create a consistent ballast that counters wind uplift and limits ponding by holding the cover taut.

• Double-chamber design for backup protection
• Even 8 ft coverage reduces the number of weights needed
• 0.4mm PVC resists cold cracking and bending

How easy is filling and storing the Aulock water tubes?

Large upgraded valve ports speed filling and draining, so you won’t spend hours wrestling with small openings. For storage, fully drain the tubes, dry them, and roll them; the PVC remains flexible for compact off-season storage.

• Wide valve ports for quick garden-hose filling and emptying
• Leave half-full in winter to allow for ice expansion
• Drape, drain, dry, and roll for space-saving storage after use

Will these water bags fit my pool type and cover style?

They are designed to work with most aboveground and inground pool covers and can be positioned anywhere along the cover edge where ballast is required. Their flexible length and soft PVC allow them to conform to rounded and straight perimeters alike.

• Compatible with winter covers for both inground and aboveground pools
• Flexible placement—straight runs or curved sections
• 6-pack provides options for longer perimeter runs or focused reinforcement

How durable are these compared with other cover weights?

Aulock uses cold-resistant PVC and reinforced valve ports to extend service life through repeated seasonal cycles, and the double chambers reduce total failure risk. While no product is indestructible, these tubes are built to withstand normal winter weather, handling wind and light debris contact without tearing.

• 0.4mm thick PVC resists abrasion and cold-weather brittleness
• Upgraded, larger valves lower stress during filling and draining
• Double chambers provide redundancy for longer reliability

Who is this for: Pool owners who want a reliable, low-maintenance ballast option for winter covers—especially those with medium to large pool perimeters or exposed yards that experience wind. The Aulock 6-pack suits homeowners seeking durable materials, quick setup and teardown, and an affordable way to protect their pool cover through the season.