Temperature-Safe Packaging Guide
Protect heat and cold-sensitive items during shipping with proper insulation.
Temperature Ranges by Item Type
| Item Type | Safe Range | Risk | Solution |
|---|---|---|---|
| Chocolate & candy | Below 75°F | Melts above 80°F | Gel packs + insulated box in summer |
| Candles & wax items | Below 80°F | Softens/deforms in heat | Ship in cooler months or insulate |
| Cosmetics & makeup | 40-85°F | Separates, melts, or freezes | Insulated mailer for extremes |
| Wine & beverages | 45-65°F ideal | Spoils in heat, freezes and explodes | Styrofoam wine shipper + gel packs |
| Fresh food (meat, dairy) | Below 40°F | Bacterial growth above 40°F | Frozen gel packs + insulated cooler box |
| Pharmaceuticals | 59-77°F (CRT) or 36-46°F (cold chain) | Loses efficacy | Qualified insulated shipper + temp monitor |
| Electronics | -4 to 140°F | Generally fine, batteries may swell in extreme heat | Avoid leaving in hot truck (carrier's job) |
| Plants | Above 35°F | Freeze damage, wilting in heat | Heat pack in winter, shade label in summer |
Insulation Materials
| Material | R-Value | Hold Time | Cost |
|---|---|---|---|
| Styrofoam cooler box | High (R-4/inch) | 24-48 hours | -8 |
| Insulated foil-lined box liner | Medium (R-3) | 12-24 hours | -3 |
| Thermal bubble wrap liner | Low-Medium | 8-16 hours | .50-2 |
| Wool insulation liner | Medium (sustainable) | 24-36 hours | -6 |
| Frozen gel packs (16 oz) | N/A (cold source) | 24-36 hrs each | -2 |
| Dry ice | N/A (extreme cold source) | 24-48 hrs per 5 lbs | -3/lb |
💡 Tip: Ship Mon-Wed to avoid weekend warehouse sitting. Use overnight or 2-day service for perishables. Mark box THIS SIDE UP and PERISHABLE.