These ear plugs are molded with super low-pressure, tapered foam to provide unmatched comfort. With a high noise reduction rating (NRR) of 33 decibels, this high performance hearing protection can be used in environments where noise is just a nuisance up to environments with hazardous noise levels. Great for loud concerts, motor sports, sleep, shooting sports, power tools, etc. directions- with clean hands, roll plug into a tight, crease-free cylinder. With opposite hand, reach over head and pull up and back on outer ear To straighten ear canal. Quickly insert earplug well into ear canal and hold in until it expands for a comfortable, secure fit. Warning: improper fitting will reduce effectiveness and could result in hearing loss or injury. The dimensions of the actual earplugs (not the packaging) are- 0.92 inch Length, 0.485 inch diameter at base, 0.40 inch diameter near tip