Mini CPR barrier by Work 'n Leisure Safety Products. This CPR barrier has a one-way valve to prevent cross-contamination from mouth-to-mouth contact or nose-to-mouth contact. Latex free transparent barrier surface; use with adults or children. Packaged in a blue, nylon key ring pouch that measures 1-3/4" x 1-3/4". It's tiny! Quantity discount available upon request.