Robelle 8 ft. Pool Cover Water Tubes 6-Pack — Extra Heavy-Duty Black, Double-Chamber Vinyl Weights

Robelle 8 ft. double-chamber black water tubes are heavy-duty vinyl weights sold in a 6-pack to secure winter pool covers and prevent them from falling into the pool.

These 8-foot pool cover weights from Robelle use a two-chamber design and thick, puncture-resistant vinyl so you can anchor a winter safety cover without straps or stakes. Designed for seasonal pool closing, each tube has a leak-resistant valve sized for easy filling with a garden hose. Fill each tube roughly half full to leave room for ice expansion and reduce the chance of splitting.

How do these water tubes keep my cover in place?

The tubes act as ballast, resting along the perimeter and pressing the cover flat against the deck, which helps block wind and keeps the cover from sagging into the water. The double-chamber layout stabilizes the tube so it resists rolling and maintains continuous contact with the cover edge.

• 8-foot length fits most pool perimeters and lines up across seams.
• Double-chamber shape reduces rotation and shifting on the cover.
• Six tubes provide even weight distribution around medium to large pools.

What makes these tubes more durable than standard options?

Robelle builds these weights from heavy .42 mm (20 gauge) vinyl that is substantially thicker than common alternatives, improving puncture resistance and longevity. Reinforced material plus a resilient valve reduce leaks and wear from winter weather and routine handling.

• Extra heavy-duty vinyl construction resists punctures and abrasions.
• Leak-proof fill valve designed for quick hose connection.
• Manufactured with decades of pool-closing experience for consistent quality.

How should I fill and maintain the tubes for winter use?

Partially filling the tubes—about halfway—is recommended so trapped water can expand if it freezes, preventing overpressure and bursting. If the valve becomes stiff, warm it briefly with a hair dryer to ease closure; inspect tubes before storage and repair or replace any with damage.

• Fill about 50% capacity, leaving headspace for ice expansion.
• Use a garden hose to fill; close valve securely to prevent leaks.
• Warm valve with low heat if it’s difficult to close; store dry off-season.

Will these fit my pool and how many do I need?

Each tube measures approximately 8 feet and is intended to be placed end-to-end along the cover edge. A 6-pack covers many standard residential pool perimeters; irregular shapes or larger pools may require additional tubes to ensure full coverage.

• 8-foot length suitable for most residential pool runs.
• Six tubes generally sufficient for medium-sized pools; add more for larger perimeters.
• Arrange tubes evenly to avoid gaps where wind or debris can lift the cover.

Who is this for: Homeowners who close their pools for the season and want a rugged, low-maintenance anchoring method that avoids drilling, stakes or complex hardware. These Robelle water tubes are best for people seeking durable materials, a simple fill-and-place setup, and a solution optimized for cold-weather expansion. If you want reusable, heavy-duty cover weights made by a long-standing pool-products manufacturer, this 6-pack is built to provide reliable winter coverage.