With Samsonite's MIGHTlight luggage, you will get ultralight features and a luxurious sleek design. Even though it's very lightweight, it still has a sturdy frame to protect the contents inside. Samsonite decided to use a 400D nylon and a 360D Nylon dobby to construct these bags, because it is strong and durable. They also added a SamGuard coating to make it water-resisitant. The zippers are the self-mending coil type, which will give you a flawless closure every time.