Unique heel strap design is effortless to slip on and off Minimize inventory & customize your Accel fins Design offers excellent water flow characteristics Less than 3 lbs per pair Maximum length (size XL-XXL) only 21 inches Ready to add some flash to your kit? If you favor power over frills, you’ll love the Accel Fin, now available in bright, dynamic colors. Compact and responsive, the Accel’s clean lines and efficient shape make it an excellent all-around fin.