350ml (two standard glasses of wine) 304 grade stainless steel egg shape wine and coffee cup with a BPA free push-seal plastic lid powder coated matt finishing exterior and electrolysis interior double walled and vacuum insulated technology will keep your white wine cold around 7-9 hours while you sit out at the pool on a hot summer day or your coffee hot around 3 hours when you just need one little steamy cup of joy to start your day off right.