Adopt high-grade imported material, fashionable chic, professional making; Mat liner made of high-grade environmentally-friendly PP cotton, warm and breathable, front and back be available to different seasons temperature use; Grade imported PP cotton, memory instant springback; Computer programs setting 13 needles / cm, uniformly solid, durable; International professional pull test (90N); Static-free & allergy free; Non-woven design at the bottom, directly isolate moisture and prevent your pet from skin disease