4 Pair (2 Sizes) Squish Fit "SHROOMS" by Earphones Plus - Ultra-soft memory foam earphone cushions - Fits most earbud style earphones (see compatibility details and other available sizes in details below) 4 Pairs of ultra-soft, memory foam earphone cushions - - 2 Pair Regular, 2 Pair Large Squish Fit' foam compresses for easy insertion, then expands to a perfect fit Conforms to ear for maximum sound isolation 3mm hole stretches to fit earphones with a connection tip diameter ranging from 3.17mm (1/8 inch) up to 5.95mm (15/64 inch) Click the "Earphones Plus" Link to the right of product picture above to see dozens of earphone cushion choices!