COFFEE ON THE GO — This pour over coffee maker set makes drinking coffee on the go super easy and convenient. This is also a great option as camping coffee maker. QUALITY MATERIAL: This coffee cup is made from environmental friendly PCTG and walnut materials, high temperature resistance, high heat insulation, high extraction heating rate. STACKABLE DESIGN: This coffe cup set adopts with 3 in 1 stackable design, which is convenient for storaging, space saving and practical. WONDERFUL GIFT: With filter cup and filter paper, which very ideal for brewing coffee when traveling, and it is the best gift for coffee lovers. WARM REMINDER: According to the professional blanking concept, small powder amount is easier to extract evenly, and it is recommended to blanking with small powder amount below 15g.