16-hour lasting non-adhesive body warmer, comfortably maintains warmth at 68°C to 82°C. - Quantity: 30 pieces - Features: Non-adhesive body warmer - Temperature range: 68°C to 82°C - Duration: 16 hours - Size: 12.5cm x 6.5cm I have one cat. Stored in a dark place. Please refrain from purchasing if you are sensitive to storage conditions, as this is amateur storage.