Remington Thin Muffs are electronic and they provide protection from both impulse noise and exposure to continuous high noise levels; advanced AGC circuitry limits high noise levels to 84db (cuts down noise levels from muzzle blasts), but doesn't shut out normal conversation. Remington's R2000 Electronic Thin Muffs feature adjustable volume controls that give you comfortable listening levels. The muffs run off 1.5v batteries which control each ear cup independently (1.5v batteries are not always readily available and with muffs, it is very common that they get left on and the batteries get drained inadvertently - which you won't realize until you actually need the muffs - so make sure to purcahse an extra set of 1.5v batteries and keep them in your shooting bag).
These muffs are quite comfortable and lightweight (9 oz.). They do not interfere with shouldering a shot gun or rifle as some others.
If you goto the shooting range on occassion and need value-priced hearing protection, these are the right muffs for you.