SILICONE RUBBER: Our gym-inspired drink coasters are made from 100% food-grade, silicone rubber. The material is completely safe, -friendly, and very easy to clean Plus, it doesn't stick to the glass. BUMPER PLATE RACK HOLDER: Stack your coasters when they're not in use on our adorable mini rack holder It's designed to look just like a bumper plate rack at the gym HOLD YOUR DRINKS IN PLACE: The Drink Armor cup coasters feature an advanced non- design to hold your drinks in place and prevent spillage. Each coaster incorporates a raised circumference for an enhanced grip. PROTECT YOUR TABLETOPS: With our bumper plate silicone coasters, you've got no reason to worry about sticky residue or water rings on your furniture. The detailed design makes nothing spills down to your tabletops. SURPRISE YOUR FITNESS JUNKY : Gymgoers love seeing the gym in any environment. With a Drink Armor gym coasters and a rack holder, they can turn any setting into a fitness-loving space Colour:As Shown Material:Silica gel Package Contents: 4 x coaster Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.