Compatibility: Compatible with JBL Tune 600BTNC / 500BT / T450BT headphones. Size: 7 x 7 x 1.8cm/2.75 x 2.75 x 0.7inch Durable Comfort: The small cushions are made of faux leather on the outside and soft foam on the inside for maximum comfort of use. Uncompromising noise cancellation: We adopted high-quality noise-isolating memory foam to ensure studio-grade sound and noise cancellation after replacing headphone cushions. Easy Installation: No tools are required for assembly. Simply line up the removable pads over the corresponding mounts on your helmet and snap them into place. Ensuring unparalleled comfort and maximum hygiene: these must have replacement pads have been carefully designed to keep you comfortable as you enjoy your favorite music.