This genuine Fender amp cover is designed to fit over and protect a Fender(R) Champion(TM) 40/50. The cover is black 100% nylon canvas material with double stitched seams with piping and opening on the top for the handle. The logo is embroidered. The cover dimensions are 18" W x 16" H x 9 1/2" D. The Fender part number is 7716352000. Please check your amp's dimensions as the dimensions of the models suggested sometimes changed depending on the year of manufacture. Protect your investment from damage, dust, etc. with this perfect fitting cover.