Soy wax is a very soft wax and will start to melt if exposed to hot temperatures for long periods of time. Please be aware that your candles can be affected by severe exposure to hot temperatures of 80 degrees or higher for long periods of time. Unfortunately, mail trucks are not air conditioned. However, to minimize the risks associated with shipping in hot weather, we will include ice packs with the shipment. These ice packs will typically control the temperature for up to two days. Cross country deliveries or any deliveries that require more than two days in transit are a bit riskier, so please keep this in mind when purchasing candles in the summer months. Even though orders under $50 are insured, USPS and UPS will not reimburse for melted candles so we cannot be held liable for melted candles. Please order at your own risk or choose expedited delivery services.