Abstract: A package for transporting temperature sensitive samples, such as ground and water samples to be analyzed, includes a lightweight plastic insulated container (cooler) body and cover. A plurality of sample containers are snugly retained within respective internal cavities of one or more foamed plastic blocks. In turn, the foamed plastic blocks are packed inside of the cooler body with bubble-wrap used to fill the interstitial space within the cooler. A liquid absorbent layer is placed in the bottom of the cooler and a plastic liner bag encases the sample containers and plastic blocks. A strap and plastic snap-clip arrangement securely holds the cooler cover on the cooler body during transportation. The sample containers may readily be removed for filling in the field, then repacked with ice added to maintain the temperature of the samples within the required range.