DOUBLE LAYER DESIGN - Inner wall 304 brushed stainless steel design, better effective insulation, durable and easy to clean; Great for hot or cold drinks at the office, home or on the go. - Splash-proof cover - Humanized design, work for cooling, stop insulation. Seal Ring - Rubber ring design seal the cup lid, durable insulation, easy and quick to use. - Bottom sliding - The bottom adopts anti-slip rubber pad design, which is more stable to position, not easy to fall off, safe and safe.