★ Best Pick
Best Overall: KittyLounge's perch uses their own twist-lock suction cup design — you press the cup to the glass, twist the base, and a mechanical cam creates a grip that doesn't rely solely on atmospheric pressure. In 8 months of testing including a summer with surface glass temperatures near 90°F, it held without issue under both cats (14 and 18 lbs).
This is a companion discussion topic for the original entry at https://pickly.blog/en/articles/best-cat-window-perch-2026/