Designed for drinking. Keeps your cold drinks cold for 24 hours, and your hot drinks hot for 12 hours. Anti-microbial. Its soft-touch, anti-microbial drinking collar ensures comfortable sipping, whilst its carry loop makes on-the-go drinking even easier. And then there's the rubber base, which proves it's the little things that count. Keeps drinks cold for 24h or hot for 12h Soft-touch, anti-microbial drinking collar. Rubber base