The Thule 804 - 24 Inch AERO Bar Pads are high density foam with no-fade UV resistant fabrics for long term durability.  Sewn-in hook and loop straps and convenient bungee cinch-cord ends allow for fast and easy installation, removal and adjustment.  Fits Thule Rapid Aero™ bars, Xsporter and most factory cross bars.  Great for economical transport of surfboards and paddleboards when combined with Thule 521 - Load Straps or Thule 531 - Express Surf Straps, sold separately.