If the ORIGIN and DESTINATION temperatures are 66°F or higher, DO NOT use a heat pack. Shipping outside of these temperature guidelines nullifies our SYI Insurance. If the daytime high temperatures straddle two categories, please contact us directly for heat pack instructions that remain within insurance parameters, qualifications and guidelines.
Heat pack use in temps above 65°F can kill invertebrates!
Basic Guidelines:
Below 38°F: Do not ship. Wait for warmer weather.
38-65°F: Use a heat pack per our directions.
66-91°F: DO NOT use heat pack.
92-100°F: Do not use a heat pack. Ship to a FedEx Ship Center facility (NOT a FedEx Office, Pak Mail, Mail Boxes Etc. or other satellite/retail location). Your shipment will arrive early in the morning and be kept inside until the recipient picks it up.
Over 100°F: Do not ship. Wait for cooler weather.
Learn more about using a heat pack.