UIRWAY 500D Oval Winter Pool Cover (21×12 ft)
21×12 ft oval, leg straps — The 21×12 oval cut of the UIRWAY 500D ratchet cover — about $96, with the same gel-coated leg straps and dual drawstring as the 33×18 we rank. Rating is the listing's pooled 4.4★ across 1,270
Specs
| Fabric | 500D, gel-coated straps |
| Tie-down system | Leg straps + dual drawstring (no ground stakes) |
| Tear strength | 780 N ≈ 175 lb (maker-tested) |
| Fit | Oval 21×12 ft, metal-frame pools (one cut on the listing's ladder: 16×10, 21×12, 24×12, 30×15, 33×18) |
| Cover pump | Yes (solid) |
| Warranty (online) | Not published (90-day returns only) |
Pros
- Leg straps that grab the pool's own uprights — no jugs, stakes or clips, and on an oval's long side the legs are exactly where the wind gets in
- The exact 21×12 cut, so the finished cover clears the top rail instead of being an 18×33 cut down to a smaller pool
- A maker-tested tear strength (780 N) actually published, where the fabric rivals publish adjectives
Cons
- Its rating is the LISTING's pooled score across rounds, ovals and rectangles, not this cut's, and the round's critical tail is the coating: "melted into the water and left tar-like goo" — check the underside each spring
- Runs small — the round's owners say size up, and UIRWAY's own site does not sell or document an oval at all (the oval exists only on Amazon)
- No warranty term anywhere UIRWAY publishes; a 90-day money-back return policy is the whole safety net
- Stock was thin at the read — Amazon showed "Only 2 left" on 2026-09-05 ("Only 5 left" via /api/po the day before); if it is gone, the 12×24 (B0GDFTYT7V, $99.99) is the next cut up on the same listing
Two failures, and the serious one is the coating. Owners report it degrading into the water: "after only a few weeks over my pool, it essentially melted into the water and left tar-like goo over the sides as well as everything that was in the water"; a second reports sticky black stains on the pool sides. The other is seams — tears, and a seam that "ripped over the winter". A copied tail from the round parent, which shares this listing and its critical page.
Round parent's first critical page (uirway-500d-winter-cover, 2026-08-31 pass); the coating theme in 2 independent reviews, seams in 2 more; no oval-specific critical review is separable on a pooled listing · critical reviews read August 2026
FAQ
Who is the UIRWAY 500D Oval Winter Pool Cover (21×12 ft) for?
Your metal-frame above-ground pool is a 21×12 ft oval and you want the UIRWAY leg-strap cover in its exact cut — the same 500D cover we rank at 33×18, at this size's price.
What do owners say about the UIRWAY 500D Oval Winter Pool Cover (21×12 ft)?
4.4★ across 1,270 owner ratings (Amazon, read September 2026 · listing-wide base · global base). What owners complain about: Two failures, and the serious one is the coating. Owners report it degrading into the water: "after only a few weeks over my pool, it essentially melted into the water and left tar-like goo over the sides as well as everything that was in the water"; a second reports sticky black stains on the pool sides. The other is seams — tears, and a seam that "ripped over the winter". A copied tail from the round parent, which shares this listing and its critical page.
What is the warranty on the UIRWAY 500D Oval Winter Pool Cover (21×12 ft)?
UIRWAY publishes no warranty term for the UIRWAY 500D Oval Winter Pool Cover (21×12 ft) — we looked for one from the maker and record the absence rather than guess. Buy it somewhere with a return window you trust.
Record
- — Carded as the 21×12 oval cut of the UIRWAY 500D so a reader lands on the exact size; read on its own listing page the same day, only 2 left in stock at $95.99, and the pooled listing rating (4.4 across 1,270) is declared on the card.
✓ Safety: no active recall — Winter/debris cover — NOT a safety cover: holds no weight and carries no ASTM F1346 rating; never let a child or pet onto it. CPSC recall API checked 2026-09-04, re-confirmed 2026-09-05 (saferproducts.gov, ProductName=UIRWAY) → 0 records; class query "pool cover" returns only Endless Pools #25339 (retractable safety cover, 2025) and Anchor Industries #16732 (safety covers, 2016) — both a different product class, opened and confirmed.
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Data last verified: September 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.