Heat Packs

Symton® Black Soldier Fly Verified independent store

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UniHeat heat packs are designed for reliable and steady heat release for hours! Provides an average warmer surface temperature of 100°F (38°C). These are highly recommended for del ivery in areas experiencing temperatures below freezing 32°F (0°C). We do not recommend adding heat packs to your order if temperatures in your area are above 40°F (4.4°C). Our SMALL size delivers 40+ hours of heat, and our LARGE size delivers 72+ hours of heat. Show more