Glass bottles (perfumes, spirits, olive oils) and candle jars require specialized structural engineering to prevent catastrophic transit shattering:
### Critical Protection Strategies:
1. Minimum 10mm Perimeter Clearance Buffer: Fragile glass should never touch the outer shipping box wall. Maintain at least 10mm of air buffer or corrugated fluting around the perimeter.
2. Top Neck Stabilizer Collar: Bottles are most vulnerable at the neck. A die-cut top collar holds the neck securely centered, preventing tilting during sudden courier drops.
3. Elevated Base Platform: Keeps the heavy glass bottom suspended 5mm–10mm above the box floor to absorb vertical drop impacts.
4. Material Choices: Dense EVA foam inserts for luxury fragrance; multi-layered E/B-flute corrugated cardboard fitments for recyclable e-commerce shipping.