–50 to –15 °C controlled temperature hold — Maintains ultra-low temperatures for frozen vaccines, biologics, and sensitive payloads for 60+ hours without dry ice or electrical power PCM panel-based temperature control— Uses removable phase-change material panels, engineered for repeatable performance and easy conditioning in lab freezers Robust, compact design — Exterior ~16″ × 11.5″ × 11.5″ with payload space ~11.25″ x 6.5″ x 6.5″; rugged exterior and dual carry / shoulder straps for field transport Compliance, reliability & reuse— No consumables like dry ice needed. Panels can be reused thousands of times, reducing waste and total use cost. Compliant with all current CDC recommendations. Lab & clinic integration — Validated system that is ideal for frozen vaccine outreach, specimen transport, mobile labs, or backup storage during power outages The Cool Cube 08 at Lab Freezer Temperatures (FT-08) is not an ordinary transport cooler (frozen vaccine and FFP carrier). It is an easy-to-carry, qualified container and pack-out system that keeps temperature sensitive product such as varicella, MMRV, zoster or fresh frozen plasma, frozen between -50 and -15°C for over 2.5 days – without using ice or electricity! This cooler is ideal for transport, but also excels at protecting valuable product during off-site use and power outages, regardless of hot conditions. The simple, validated, patented technology is the best compact thermal protection product available to maintain the cold chain! NOTE: An ultra-low freezer capable of holding a -30°C/-22°F or lower temperature is needed to prep the panels for maximum hold time.