Our Explorer mens insulated lunch box is HEAVY DUTY, making it durable and rugged for outdoor activities such as fishing, hiking, hunting. Perhaps you just want to carry your lunch or snacks in something more masculine when going to the office, school, or even a picnic. This rugged lunch box is made with premium high-quality materials, is BPA FREE, and the insulation material is 100% EVA lining with a 100% polyester shell. Did we mention that it also has 5 color options ( Khaki, Navy, Olive, Purple, Coffee ) and makes a great gift for men.