Vinyl. Extra Large Bathtub Mats: No Chemical Smell, Vinyl Quality Material. Heavy Duty and Standard Dimensions and RectangleS Shape Makes It Lays Flat In Any Smooth Bathtub Floors. Non-Slip Shower Mats with Hundreds of Suction Cups: Anti-Slip Bath Mats Features 200 Suction Cups That Help Hold In Place On Smooth Surfaces. Powerful Suction Cups offer 360 Degree Safety Protection for Users. Bathtub Mat Is A Great Choice for The Home, Gym, Spa and More . Multifunctional and Utility: Looks Like Design, Provide Massage Experience In Shower Time As It Comes with 200 Suction Cups, Featuring Necessary Anti-Slip Function, Meanwhile Extra Large Mat Is 40 Inch X 16 Inch Which Provides Excellent Coverage and Also Features Small Holes Throughout to Allow Water to Circulate. Machine Washable and Durable: Bath Mat Consists of 176 Drain Holes, Machine Washable to Facilitate Hassle-Free Maintenance. to Clean At Any Time, Simply toss The Mat Into The Machine and Enjoy Its Fresh Appearance. Air Dry for Years of Safe, Healthy, Hassle-Free to Use. Warning: Bathtub Mat Only Attach to Smooth and Clean Surface. DonT for Use On Textured, Tiled, or Non-Smooth Surfaces. Do Not Use Bath Oils In Case of Slipping.ItS Recommend to Allow The Mat to Air Out In A Well Ventilated Area for 24 Hours Before Use If You Encounter A Strong Odor When The Package Is First Opened.