Contains 2 B-packs 6 X9 * Pain Areas: Arm Back Shin Shoulder * Convenient Size For Many Uses Either By Itself Or To Rotate As A Refill In Our Wrap Systems For Continuous Uninterrupted Cold Therapy * Refill For Model 530 540 And 550 (10078b C D) * Packs Are Flexible At A Normal Freezing Temperature * Features Fully Flexible: Molds Around Painful Areas When Frozen * Low Freezing Point: Packs Are Flexible At A Normal Freezing Temperature* Stays Colder Longer: Maintains Temperature Longer For Maximum Therapeutic Benefit * Quality Materials: Non-toxic Fill Inside Latex-free Vinyl * Durability: Can Be Used Several Times A Day * Size : 6 X 9 X 1.5 (2 Packs Included) *