Pebbles! That's what Nice's beaches are made of, not sand. So be prepared. Walking barefoot down the beach or lounging on nothing more than a towel are not as comfortable here as they would be in sandier circumstances. A folding beach mattress will be your best friend, unless you're springing for a lounge chair at one of the private beaches. And a good pair of beach shoes is also indispensable, to protect your feet from bruises and burns.