The WALL® Tea InfuserThe Wall teacup is the simplest and cleanest way to infuse tea, herbs and berries in a single cup. The glass cup has a fused glass strainer on the preferred drinking side to act as a filtration barrier to keep the leaves from your mouth allowing for a full, unconstricted infusion to occur. The cup comes in 2 sizes 440ml & 310ml options. Each unit is handmade from 100% borosilicate glass (laboratory grade, heat resistant), and has proven to be