Realistic 3D Bottle Model

I need a lightweight yet realistic 1-liter water bottle model that drops straight into a single-page web view. Please deliver a .glb file under 2 MB, ready for fast WebGL loading.

Key details
• Plastic look is essential. A subtle gloss is fine as long as reflections stay web-friendly.
• Approximate proportions: height 23 cm, base diameter 7 cm, neck 3 cm, cap height 2 cm. Tweak as needed for natural balance.
• Front and back labels must sit on their own UV islands (or separate meshes) so I can swap textures on the fly.
• Create the cap as a separate object; I want to drive its color from code later.
• Keep materials and textures simple: realistic plastic for the bottle body, flat textures for labels.

Deliverables
1. One optimized .glb model (<2 MB) with clean naming for all nodes.
2. A sample front and back label texture (PNG or JPG) that proves the swap works.
3. Quick note or code snippet showing how to load the file, rotate the bottle 360°, and replace textures dynamically in a standard three.js or Babylon.js scene.

Focus on solid topology, tight UV mapping, and a minimal draw-call setup so performance stays snappy on mobile.