NEER GOLD Puff Tank is our preium range tank. NEER GOLD Puff Tank is made from 100% vergin LLDPE material and imported puff material. It's outer layer is black and inner layer is blue and middle layer is puff. NEER GOLD Puff Tank is extra extra heavy weight. This tank is Sun registence control puff in middle layer, so water temprature controled in this tank. In this tank we gives 12 years Gaurantee.