The Giro X-Static foot bed offers both anti-microbial protection and adjustable anatomic support. The foot beds come with 3 different arch heights that can be easily interchanged to achieve the perfect amount of support. The heel cup is deeper than most stock foot beds to increase stability. They're compatible with most brands of cycling footwear. Package includes 2 Footbed and 3 Sets of arch support - low, medium and high.