NAF Water Bottle Black. The NAF Reusable Water Bottle is a must-have for everyone. Constructed from insulated stainless steel to help keep your warm drinks warm and your cold drinks cold; perfect for all year round use! Plastic and BPA free, the NAF Water Bottle is a great alternative to single-use, plastic and Styrofoam cups and a way to help reduce landfill and waste. The NAF bottle is leak proof and designed to last, so wherever you are heading, bring your NAF Water Bottle with you. 500ml