Volleyball knee pads should fit snugly around your knee without cutting off circulation, with the center of the padding sitting directly over your kneecap. They should stay in place when you move, bend, and dive without sliding down your leg or bunching behind your knee. Getting the fit right matters more than most players realize, because a pad that shifts even slightly during play leaves your kneecap exposed at the exact moment you hit the floor.
How to Measure for the Right Size
You need two measurements to find your size: the circumference of your leg about 4 inches (10 cm) above your kneecap, and the circumference of your calf. Use a flexible tape measure and keep it flat against your skin without pulling tight. Take both measurements while standing with your leg relaxed, not flexed.
Every brand has its own size chart, and they vary enough that you should check the chart for the specific pad you’re buying rather than assuming your size carries over. A medium in one brand may correspond to a large in another. Match both of your measurements to the chart. If you fall between two sizes, lean toward the smaller one. Most volleyball knee pads are made from stretchy knit or blended fabrics that loosen slightly after a few sessions. Players who buy pads that feel “true to size” out of the package often find they fit perfectly after three or four wears, once the material conforms to their leg shape.
Where the Pad Should Sit on Your Knee
The thick padded section should be centered directly over your kneecap. A good way to check alignment: the top edge of the padding should sit roughly at the top of your kneecap, with equal coverage above and below. If the padding rides too high, it protects your thigh instead of your knee. Too low, and it covers your shin while your kneecap takes the impact.
When you bend your knee into a defensive ready position, the pad should move naturally with your leg and keep the cushion over the kneecap. If it shifts significantly when you crouch, the fit is off. Try pulling the sleeve up slightly higher on your thigh before play. Many players position their pads an inch or so above where they want them, knowing gravity and movement will pull them down during a match.
Signs the Fit Is Too Tight or Too Loose
A knee pad that’s too tight will dig into the skin at the top and bottom edges, leave red marks, or create a tingling sensation below your knee from restricted blood flow. You should be able to slide one finger under the top edge of the sleeve without straining. If you can’t, size up.
Too loose is the more common problem. A pad that slides down your leg every few plays forces you to constantly pull it back up, which breaks your focus and leaves you unprotected. The tapered shape of your leg works against you here: your thigh is wider than your calf, so gravity naturally pulls the sleeve downward like it’s sliding down a cone. If the elastic at the top of the pad doesn’t grip your thigh firmly enough, it will migrate south with every sprint and dive.
How to Prevent Sliding During Play
The single most effective fix for sliding is choosing the correct size. Clinical research on knee sleeves consistently points to anatomical fit as the primary factor in keeping them in place. No amount of tape or adhesive spray compensates for a pad that’s simply too big for your leg.
Sweat is the second biggest culprit. Materials that trap moisture against your skin, like neoprene, create a slippery layer that lets the pad slide freely. Look for pads made with moisture-wicking fabrics, typically polyester-spandex blends, that pull sweat away from your skin and let it evaporate on the outer surface. Dry skin has significantly less friction than wet skin, so a breathable pad grips better as you heat up during a match.
Wearing compression leggings or tights underneath can also help. The compression fabric gives the knee pad a textured surface to grip instead of bare, sweaty skin. Some players prefer this approach in humid gyms or during tournament days when they’re playing multiple matches back to back.
Comfort Behind the Knee
The area behind your knee is one of the most sensitive, high-friction zones on your body. When a knee pad doesn’t stretch enough, the fabric bunches up in this hollow every time you bend your leg. That bunched material acts almost like a rope pressing into soft skin, causing raw chafing that gets worse throughout a match.
Pads made with four-way stretch fabric solve this by elongating and conforming as your knee bends, laying flat against the back of your knee instead of gathering. If you notice irritation or redness behind your knee after practice, the pad either lacks sufficient stretch or is too large, creating excess material that folds on itself. Switching to a pad with a higher spandex content, or simply sizing down, usually eliminates the problem.
When to Replace Your Knee Pads
Knee pads don’t last forever, and a pad that fit well six months ago may not protect you today. The three clearest signs it’s time for a new pair:
- Flattened padding. Press the cushioned area with your thumb. If it stays compressed instead of springing back, the foam has lost its resilience. You’ll notice this as a harder impact when you hit the floor, almost like diving without pads at all.
- Stretched-out elastic. If the sleeve slides down your leg during play when it never used to, the elastic fibers in the top band have fatigued. Frequent readjustment is the earliest warning sign. Once the elastic loses its grip, no amount of repositioning keeps the pad in place.
- New pressure points or pinching. Pads that suddenly feel stiff or dig into your skin, especially ones that used to be comfortable, signal that the internal padding has broken down unevenly. The pad is no longer distributing force across its surface, concentrating pressure in spots instead.
For players practicing three or more times per week, expect to replace knee pads roughly once a season. Washing them in cold water and air drying (never machine drying) extends the life of both the elastic and the padding. Heat from a dryer breaks down the stretchy fibers faster than anything else.
Trying Them On Before You Buy
If you’re buying in a store, put both pads on and spend a few minutes moving around. Crouch into a defensive stance, shuffle laterally, and simulate a diving motion. The pads should stay centered on your kneecaps through all of this without needing adjustment. Bend your knee fully and check for bunching behind it. Straighten your leg completely and make sure the top and bottom edges don’t roll or fold over.
They should feel snug, even slightly tight, out of the package. A “comfortable” fit in the store often becomes a loose fit after a week of practice as the fabric stretches and conforms. You want that initial snugness to break in toward a secure, second-skin feel rather than starting comfortable and ending up sliding around by mid-season.