Abimars 0.7mm Thicker Black Winter Water Tube for Swimming Pool Covers, 6 Pack 8 FT Water Weight Bags for Pool Side, Three-layer Composite Material

Three-layer Composite Material: Our water bag is made of a three-layer composite material with a thickness of 0.7mm, 8 feet long, 6 pieces. The upper and lower layers of the material are made of E-PVC material, while the middle layer composed of a fiber explosion-proof layer. These tubes are very sturdy and maintain a much more defined shape which helps seal the edges of the cover than thinner 0.4mm 1-layer PVC tubes.

Single-Chamber Black: Our single-chamber water tubes had a higher water capacity than same length dual-chamber water tubes. They were also heavier, exerting greater pressure on the ground, provides a better sealing effect for the swimming pool. Moreover, These tubes are also virtually seamless which means there will be less chance of the tubes failing and leaking at the seams, as most of the leaks occur at the seams.

High-frequency welding: Our water bags are made using high-frequency welding technology with wide seams, providing excellent air tightness and resistance to high pressure. This technology allows them to withstand temperatures as low as -10°F (-25°C). You only filled them 2/3 full, to prevent breakage from freezing expansion.It can be used for 2+ years under low temperatures.

Screw Tops: A great feature is the screw on filler cap. Most water bags have snap-on style water filling caps, which are difficult to close while keeping all the water inside the bag. The screw caps are much more user friendly and convenient to use. They have a rubber seal on the inside to keep the water from leaking out of the bags.

Easy To Use: It only requires one water filling instead of two. Another advantage of single-chamber water tubes is that the water tubes could be positioned along a curve(Advantages of the cylindrical design). So whether your pool is circular, oval, or various curved shapes, you can perfectly cover the edges of the pool. Because of its external design features, the double-chamber water bag cannot be placed along curves.