-The Whistle Shield easily attaches to all pea-less whistles-Diverts all whistle emissions away from the eyes, nose and mouth of others -Reduces whistle “touches,” as once Shield is attached users will not touch the whistle again-No material impact to sound-Wipe Clean = No Washing / No Bag-Patent Pending -not approved for ncaa yet -can not be returned Please note like undergarments we can not issue refunds for whistles and whistle products