Thermovent® Heat & Moisture Exchanger, 1 Case of 50 Underwear Forms an instant seal (or Autoclavable Up to 325 Forms an instant seal (or scab) over the wound in seconds Two handled cup with weighted base and rounded corners is ideal for pediatric use * It is self righting even when released from a lying position * It comes with a clear plastic dish shaped lid with two holes to let fluid flow into the dish for drinking * Another lid has a molded plastic * mouthpiece * Top shelf dishwasher safe * Has 6 1 2˘ oz Original Portex Thermovent T paper media provides high level performance heat and moisture exchange to patient rounded edges aids patient comfort