travel flask: Double wall stainless steel thermos with 1200ml capacity,48 hours insulation to 62 degrees ... Reusable, 100% recyclable 550ml Stainless steel thermos vacuum flaskDouble wall vacuum insulation for maximum temperature retention, hot or cold ... briefcases100% BPA-free, Reusable, 100% recyclableCan be spray painted with many colors, accept customized colorsLogo: silk screen printing /laser ...