With an insulated thermal liner, food is kept cold up to 6 hours and warm up to 3 hours. Can be used anywhere and anytime as a regular tote bag as well. The lightweight paper-like material allows for your personal customization such as drawings, phrases, and stickers.Easy to maintain, simply wipe with a damp cloth and let dry. Made of durable Tyvek material, tear-proof, waterproof and leak resistant, Suitable for office, work, school, outdoor or traveling, for all ages. Welcome to custom.