The Enviro Shower Filters contain 16oz of bacteriostatic KDF-55 and 2oz of crystal quartz, Together, they remove chlorine and hydrogen sulfide, reduce heavy metals and naturally soften the water, They fit all showers; simply screw on between the water pipe and your favorite shower head - No Plumbing Required, Enjoy the benefits of chlorine free shower water, Improves dry skin and flaking scalp, Fits standard showers and requires no tools or special plumbing, The compact filter lasts for about a year of regular use and replacement cartridges are readily available, Prevents breathing chlorine gas or its absorption into skin, Size - 3 x 5, 5 x 3 inches , Weight - 2 pounds SKU: NWVE005