Some protectors list certifications such as GOTS (Global Organic Textile Standard) and OEKO-TEX (STANDARD 100 / MADE IN GREEN) for their materials.
Many protectors add a quilted or fleece top with polyester fill or batting as the padding, creating a noticeably cushioned surface.
Common sizes shown include 52" x 28" and 50" x 27"; several listings are described as fitting standard full‑size crib and toddler mattresses (52" x 28").
Listed maximum mattress depths include 8 inches, 9 inches, 10 inches and 12 inches, depending on the product.
Options include fitted styles with elasticized edges (all‑around elastic, 4‑corner elastic, or full fitted stretch skirts) and encasement styles that use a zip closure to fully wrap the mattress.
Waterproof barriers described include waterproof polyester backings and TPU‑coated polyester bottoms; at least one listing explicitly states the waterproof layer is PVC‑free.
Most listings state the protectors are machine washable. Drying instructions vary: some recommend tumble drying (including "tumble dry low"), while others advise line drying or laying flat to dry.