Double wall made of stainless steel 18/8 (304) Thermal design to prevent burns Capacity: 12.85 fl.oz / 0.38 L Weight: 9 oz / Dimensions: Ø 3.3" x 4.4" Rust-resistant and dishwasher safe Cap that opens at the mouth and removable seal Laser marking without solvent Free from bisphenol A (BPA)