Inclusion Criteria:  Ability to give informed consent Age older than 18 years and younger than 40 years. Gestational age >36 weeks Shivering during regional anaesthesia for caesarean section  Exclusion Criteria:  Inability to give informed consent Latex allergy Receiving combined spinal epidural anaesthesia (CSEA) Secondary spinal anaesthesia for caesarean section in patients with unsatisfactory epidural labour analgesia