Capacity: 0.5L; Heat retention after 6h >= 78 C; Body: Double-walled 304 & 201 stainless steel for heat retention, customized patterns and colors; Bottleâ??s inner bottom material: Stainless steel 316; Outer lid: 304 stainless steel material, just twist to open, can be used as a cup; Inner lid: PP Plastic material, just press the button to open, and twist to fully open; Bottom: Silicon layer added for enhanced skid resistance; Color and Pattern: Optional or customized; Logo: Rang Dong; OEM: Accepted;