The tea water separation tea cup is made of high borosilicate glass and 304 stainless steel. It is divided into an independent tea storage cup, a stainless steel filter and a large-capacity cup body. Resistant double layer glass bottle, it’s safe for both boiling and ice water. Suitable for portable tea cups for mountaineering, school, office, picnic, outdoor, fitness, etc. It suit for imprinting your logo to satisfy the needs of advertising campaigns and promotions.