Oversized coasters
Coasters are for tables. Couches are a stability problem.
What coasters do
Reduce moisture transfer and protect hard surfaces.
What couches do
Deform under load, creating tilt and wobble—then bumps create tip-over momentum.
Proof-first decision
If an oversized coaster fails on a seam under light bumps, it’s not couch-safe—regardless of size.
Related
FAQ
Do oversized coasters prevent couch spills?
Usually no. Coasters protect surfaces; they don’t correct tilt + wobble from cushion compression.
When do they help?
When the surface is rigid (tables/counters) or you mainly want moisture protection.
What’s a better approach on couches?
Use a method designed for soft surfaces and validate with the couch seam test mindset.
More: category dictionary · getsteadi.com