Spinit Sp-51, 32 OZ Travel Mug, Stainless Steel Thermos, Outdoor Sports Water Bottles. Remain Hot for 18-24 Hours. Mountaineering, Rock Climbing, Camping, Skiing Durable Stainless steel construction keeps beverages hot or cold for 18-24 hours Double wall thermal insulation Wide mouth and easy-to-clean nonstick interior One-touch pour through stopper Collapsible handle and carrying strap