Each Cups mats' size: Outside diameter 10.2cm (4") x 3.3mm (0.13") in thickness. Inside diameter 9cm (3.5") with 1.3mm (0.05") lip, weighs only 22g. Each cup table mat is BPA free, non-toxic, food grade silicone, which is dishwasher safe, plus easy to hand wash under tap water, heat resistant and quick drying Our drink mats have a non-slip base which easily grips surfaces, as well as being completely waterproof to protect surfaces from cup/glass marks or stains Our cup place mats have a raised edge that prevents fluid from dripping off the mat and helps keeps the glass or cup in position Our drinks mats set is perfect for parties, home and indoor use, outdoors in the garden, or used in the office and more. They are lightweight and easily stored away when not in use