Capacity: 0.4L/0.45L/0.6L; Heat retention after 6h >= 78 �°C; Body: Double wall 201 & 304 stainless steel for heat preservation, customized patterns and colors; Lid: 304 stainless steel material, just twist the lid to get water; Color and Pattern: Optional or customized; Logo: Rang Dong; OEM: Accepted;