一. TWO CORE STYLES: FULL-FACE VS HALF-FACE KIGURUMI SHELL

1：Full-Face Head Shell

- Structure: Completely wraps the entire face, jaw and lower skull for seamless doll-like appearance

- Advantages: Highest anime character reduction, smooth full facial outline, strong enclosed doll texture, blocks outside light interference

- Disadvantages: Less air permeability, muffled speaking voice, longer adaptation period fornewusers

2：Half-Face Head Shell

- Structure: Only covers upper face from eyebrow to nose bridge, entire chin is exposed

- Advantages: Outstanding ventilation, clear natural voice for interaction, easy to put on and take off, friendly for beginners and all-day streaming

- Disadvantages: The real jawline can be seen closely, lacking full integrated doll aesthetic

二.  KEY BODY MEASUREMENTS FOR ACCURATE SIZING

1. Head Circumference: Measure horizontally above eyebrows around the bulgiest occiput

- Standard:54–56cm

-Medium:57–59cm

- Large:60cm+

2. Pupillary Distance: Decides whether vision is stable without dizziness

3. Face Depth: Avoid forehead squeezing and cheek clamping problems

三. Matching Tips for Different Facial Features

- Wide cheekbones & thick jaw: Choose wide inner cavity version

- High forehead: Select shells with extra forehead inner space

- Flat occiput: Avoid overly round rear shell to prevent shaking and looseness