pool bubble cover

Most bubble (solar) pool covers are made from polyethylene (PE), commonly low-density polyethylene (LDPE). Some listings refer more generally to PE or high-density variants, and a few dome-style or enclosure products may use PVC.

Common thickness labels for bubble-style pool covers range from about 12 mil up to 16 mil. Some descriptions also express thickness in microns (for example, ~300 microns ≈ 14 mil).

Reported temperature gains vary widely between listings. Examples range from small increases of about 1.8°C (~3°F) up to larger claims of roughly 8–15°C (14–27°F). Larger reported gains are generally associated with several days of consistent sunlight (for example, reports often cite changes after about 5–7 days). Actual results depend on local sun exposure, weather, pool size and cover quality.

Bubble covers are described as suitable for both inground and above‑ground pools. Several listings also note use with smaller pools, spas and hot tubs.

Covers are typically lightweight and can be folded or rolled for storage. Many packages include a carrying bag or note easy storage and transport for offseason or between-use handling.

Listings commonly advise placing the cover bubbles-down (bubbles facing the water). The thousands of air pockets act as insulation and help trap and transfer sunlight-derived heat into the pool.

Listings describe covers made from thicker, high-density polyethylene (PE) or durable PE blends and advertise wear‑ and tear‑resistance. Some specifically note resistance to UV degradation and longer-term use, with advertised durability depending on material and construction.