Sleek Stainless Steel Water Bottle: A Precision Engineered Masterpiece

Ultra-realistic 8K product render of a premium stainless steel water bottle, vertical 4:5 aspect ratio. 
The bottle features a double-wall vacuum insulated structure with a matte black powder-coated outer finish and subtle metallic reflections. 
The design includes a sleek cylindrical body, minimalistic branding, and a flat anti-slip rubber base. 
A modern screw-on lid with a brushed steel texture and integrated silicone seal ensures leak-proof functionality.

Show a cutaway cross-section revealing internal components: 
inner food-grade stainless steel liner, vacuum insulation gap, outer steel shell, and optional copper coating layer. 
Highlight material thickness, precision engineering, and thermal insulation structure.

Lighting: soft studio lighting with high contrast reflections. 
Background: clean gradient (dark to light). 
Focus on realism, sharp details, industrial design aesthetics, and premium product feel....