These work great. There are 2 of these boots and the wedge in this set. If you only need one of them, let me know and we will work that out. 

• Soft, fluid and stain resistant material can be cleaned and disinfected if soiled
• Pressure-absorbing filling creates fluid-like interior and absorbs pressure away from bony prominences
• Soft, elastic straps with hook tabs for easy and secure placement 
• Anti-rotation wedge easily attaches to either side of the boot
• Compatible with sequential and intermittent compression devices