Dealing with knee pain is not a lot of fun. There are things you can do to lessen your pain faster though. The O2 Cold and Compression Knee Wrap is a handy tool with a gel liner that you can pump up with air to alleviate your pain. You can remove the gel liner to cool it in your fridge. This works above or below clothing. It can be used for strains, sprains, fatigue, and rehab. You can think of it as the ultimate ice pack for athletes.