Hot Pack (reusable hand warmer, reusable heat packs) Features: 1) It can last approximately 15 - 30 minutes 2) Reaches a high temperature of 130 degrees 3) Product provides heat on it's own after activation. 4) Convenient and portable 5) For use whenever and wherever hot therapy is needed Usage: Simple squeeze the pouch like the instant cold compress. Instant hot pack can last approximately 15 to 30 minutes and reaches a high tempreture of 130F.