Swigs patented dimple design looks and feels like a real golf ball Perfect for the golf enthusiast Fits most standard cup holders Includes BPA free lid with removable slider Cold 24 hours hot 3 hours Slip-free scratch-free noise-free silicone bases Triple Insulation Technology double-walled vacuum-sealed and copper-plated Condensation free and nonbreakable 5mm 304-188 stainless steel BPA Free Hand wash