GSI Outdoor is a simple silicone pour over coffee maker that is perfect for travel or camping. Collapsed, this unit measures only 1 inch by ~5.5 inches. This small disk design with snap on cover keeps the brewer clean until you are ready to use, or after use. We have also seen similar pour over brewers, but the self contained design makes this coffee maker perfect for travel and especially useful when camping or hiking. This unit is designed for compatibility with your choice of pour over filter.