Robelle 8 ft Pool Cover Water Tubes 6-Pack — Heavy-Duty Double-Chamber Vinyl, Leak-Proof Valves

Robelle 8 ft. double-chamber water tubes are heavy-duty vinyl pool cover weights sold in a 6-pack to secure winter pool covers without slipping or rolling.

These 8-foot water tubes from Robelle are designed to hold pool covers in place through winter weather. Built from thicker-than-standard puncture-resistant vinyl and featuring a double-chamber design, they resist rolling and spread weight evenly along the cover edge. Each tube includes a leak-proof valve sized for a garden hose so filling is fast; for freezing climates, fill the tubes only halfway to allow for ice expansion.

How do these water tubes keep my pool cover secure all winter?

The long 8-foot tubes create a continuous weighted barrier along the cover edge, preventing the cover from sagging or sliding into the pool. The double-chamber design reduces the tendency to roll, so the tubes stay aligned and maintain consistent pressure.

• 8 ft length deploys along a large section of cover edge
• Double chambers lock shape and reduce rolling
• Even weight distribution prevents localized sagging
• 6-pack gives multiple anchor points for larger pools

Are these Robelle tubes durable and easy to fill?

Yes. Robelle constructs the tubes from heavy-duty 16-gauge (.33 mm) vinyl that’s about 107% thicker than typical industry options, improving puncture resistance. Each tube has a conveniently placed, leak-resistant valve that fits a standard garden hose for quick filling.

• 16-gauge puncture-resistant vinyl for longer lifespan
• Leak-proof valve compatible with garden hoses
• If valve sticks, a hair dryer softens material for easier closing
• Fill halfway in freezing conditions to prevent bursting

What is the correct way to fill and position the Robelle water tubes?

Connect a garden hose to the tube valve and fill each tube to about half capacity when freezing is possible—this leaves room for ice expansion and reduces the risk of popping. Lay the tubes along the pool cover edge with the seams facing in the direction that minimizes rolling; clip or weigh the cover as needed to secure the rest of the perimeter.

• Attach hose to valve and fill to roughly 50% in cold climates
• Place tubes evenly spaced along cover edge for balanced support
• Orient tubes so double-chamber seam prevents rotation
• Use the included six tubes to cover long sections or corners

How do Robelle tubes compare to sand bags or other weights?

Compared with sand bags, water tubes are easier to store, lighter when empty, and simpler to fill or drain seasonally. The flexible vinyl contour better follows pool cover edges, and the double-chamber form helps keep them aligned, reducing trips to re-adjust weights after storms.

• Lightweight when empty for compact winter storage
• Faster to install and remove than heavy sand bags
• Double chambers hold shape better than single-chamber weights
• Reusable year after year when maintained properly

Who is this for: Homeowners who close their pool for winter and want a reusable, heavy-duty solution that resists rolling and punctures. These Robelle 8 ft. tubes are ideal for larger covers, pool owners who prefer hose-fill conveniences, and anyone looking for a compact storage option when weights are not in use. They work well in freezing and non-freezing climates when filled according to guidelines, and are designed for straightforward seasonal installation and removal.