Features: Get rid of mucus in the lungs easier – special hollow arc cover and ergonomic design. Chest physical therapy (CPT), or postural drainage and percussion, helps loosen mucus from the airway walls and assists in moving mucus up and out of the body, supporting the body's natural mucus clearance process. Quick and easy to use, this device typically requires only 5–10 minutes, 1–2 times per day. Helps break up mucus for children, adults, elderly individuals, smokers, swimmers, deep sea divers, athletes, singers, and wind instrument players. Professional-grade quality; this chest percussion therapy cup is used and recommended by healthcare professionals. A thoughtful gift for loved ones who need help with mucus clearance. Made of silicone material with high elasticity, durable and resistant to deformation. Provides uniform pressure and consistent performance. Comfortable to use and ensures reliable results across users. Lightweight and portable design makes it easy to carry. Keep one at home and one in your bag. Compact size suitable for kids, adults, and elderly users. Specifications: Material: Silicone Color: Clear, Purple, Gray, Blue Intended User: Adult Height: 6.5 cm / 2.56 inches Diameter: 10.1 cm / 3.98 inches Note: Please allow 1–2 cm variation due to manual measurement. Ensure you are comfortable with this before ordering. Due to differences in monitor displays, the actual color of the item may vary from the picture. Package Includes: 1 Piece Pressure Drum Massage Cup