Felt-backed rugs and pads commonly use a plain felt backing. Some products pair felt with a latex backing, and heavier or utility mats may use a waterproof PE (polyethylene) backing.
Thickness varies by product: some runner-style felt pads are about 1/4" thick, while other carpet pads list a thickness around 0.47" (12 mm).
Care depends on the item: some washable rugs are machine-washable; many floor mats and pads recommend spot cleaning or wiping; waterproof surfaces often only need a one-wipe maintenance routine.
Both options appear: some items are specified for indoor use only, while others are listed as suitable for both indoor and outdoor use.
Felt padding adds cushioning and shock absorption, helps reduce fatigue from standing, and provides rebound support that can ease strain on ankles and the lower back.