The Brewista Flat V Cone glass dripper is made from durable double wall tempered borosilicate glass to maintain temperature, while remaining cool to the touch. The tapered flat V cone design uses a standard #4 flat bottom V paper filter. A non-slip silicone base allows the dripper tosit neatly on your favourite mug, or the Brewista 360ml and 600mlGlass Servers. The silicone base is easily removed forcleaning and the full unit is Dishwasher safe (top rack). Features: Double wall tempered heat resistant glass Non-slip BPA free silicone base Maintains temperature but remains cool to the touch Uses full cone style paper filters Fits easily onto Brewista servers and most mugs Dishwasher safe (top rack) Specifications: Dimensions: 112mm (h) x 132mm (W at silicone base) 123mm (W at top glass)