Knee sleeves are support tools for athletes and fitness enthusiasts. Also called “knee compression sleeves,” they are intended to provide support during weight training or during dynamic sport movements.  A knee brace is something you’d likely get from a physical therapist or other medical professional after an injury such as an ACL sprain or muscle strain, or to deal with knee pain from osteoarthritis or tendonitis. Medical-grade knee braces often have open patella spaces or patella gel pads for support and pain relief.  Finally, knee wraps are another type of fitness training tool that are similar to knee sleeves. They are similar to wrist wraps in that you manually wrap the fabric around your knee joint to give yourself as much or as little compression and support as you’d like.