Although this tent outshone the Flex-Bow in terms of comfort, the Flex-Bow’s unique storage capacities were a super useful feature. The tent’s exterior is made form Hydra-Shield, 100% cotton duck canvas that is durable, watertight and breathable materials. It is spacious with 6’6″ high ceiling that provides walk-around space within the tent easy and comfortable. If you're looking for a large family sized tent that is highly resistant to the elements and built to last for years then we recommend this tent. It comes with a Limited Lifetime Warranty and if well taken care of it should last at least that long. Kodiak rain fly tent consists of premium grade, hydra-shield, and 100% cotton duck canvas (walls: 8.5OZ, Roof: 10 OZ). The Kodiak Canvas Tent is a great tent. he Flex-Box Deluxe is part of Kodiak Canvas’ Flex-Bow tent lineup.