| Feature | Bellow Cover | Telescopic Cover |
|---|---|---|
| Structure | Flexible, foldable (accordion-style) | Rigid, metal segments that slide over each other |
| Movement | Expands/contracts | Slides in/out like a telescope |
| Material | Fabric, rubber, plastic (with or without stiffeners) | Usually sheet metal (like stainless steel) |
| Weight | Lightweight | Heavy-duty |