Thickness varies by style. Examples in listings include about 0.98 inches of padding for quilted mats and roughly 0.47 inches for thinner interlocking tile sets. Other products are described as "extra-thick" or cushioned but do not provide a specific measurement.
Listings cover a wide range of ages, often starting at newborn. Example labels include "Newborn and Up," "0–36 months," "0–5 years," and "All Ages," with several sets specifically noting suitability from 0 months.
Many foam play mats are designed for portability: several fold or compact for room-to-room use, some include a carrying case or are described as lightweight for transport, and a few have fold-up sides or pop-up walls for containment. Storage approaches vary by model.
Most listings recommend spot-cleaning or wiping with a mild soap-and-water solution and drying fully before storage. Many warn not to submerge or soak the mat and to avoid abrasive cloths, harsh cleaners, or bleach. One foldable mat description specifically notes a machine-washable model, but that is an exception rather than the norm.