4-PACK ADULT & CHILD TRAINING MASK KIT- This 4 pack of adult and child bag-valve training masks includes 4 Practi-MASK CPR Training Masks, 4 Bag Valve Squeeze Bags, & 4 Reservoir Bags COST-EFFECTIVE TOOL FOR CLASSROOM TRAINING OF CPR - This practice BVM CPR Trainer and mask provides an alternative to the use of a traditional training tools and they function just like an actual Bag Valve Mask SAVE LIVES - Training with a practice rescue CPR training mask and bag valves gives you practice on the ability to save lives in an emergency situation. This face mask shield CPR barrier fits most Adult/Child CPR training dummies CPR TRAINING - WNL Products has a quality department that ensures all items are properly manufactuered for CPR training. WNL PRODUCTS DIFFERENCE - WNL Products is a leading supplier of CPR and first aid training equipment which can be attributed to quality, cost effective, and innovative products