Enjoy spill-free relaxation on your sofa, recliner, RV or boat with this universal couch cup holder adapter insert, engineered to stabilize oversized mugs, tumblers and bottles. The included removable anti-slip mat enhances friction and grip, helping prevent tipping, wobbling and messy drink spills on your upholstery. Choose your by carefully measuring your existing couch cup holder before purchase to a secure installation. The Medium adapter fits 3.15-inch (80mm) holders and expands to accept drinks up to 3.6 inches (92mm), while the Large adapter fits 3.5-inch (89mm) holders and accommodates cups up to 4 inches (100mm) wide. Enjoy the oversized drinks you really love instead of being limited by factory cup holders. This expander securely holds large coffee mugs with handles, popular stainless tumblers, insulated water bottles, big fast-food soda cups and even stemmed or stemless wine glasses during movie nights and game days. Match your décor effortlessly with three versatile colors that blend with most . Select Classic Black for a clean modern look, Rich Brown to complement leather and wood tones, or Bold Red to add a of personality to your living room, theater seating, , boat or RV cup holder setup. Install in seconds with no tools or hardware-simply drop the adapter into your armrest or center console cup holder for instant use. Constructed from rugged, high-quality plastic for durability, the insert and anti-slip mat lift out easily for quick cleaning; just wipe them down and reinstall for everyday convenience.