Knee pads. If you're playing indoor volleyball, a pair of knee pads can protect your knees when you hit the floor to make a play. If you're new to the sport, you might dive or slide awkwardly, and you'll appreciate the protection. As your skills progress, you may learn how to play without banging your knees, but knee pads are still a good idea.
Padded shorts. Indoor volleyball players can get bruised hips when they dive for a ball. Some players choose to wear shorts with hip pads in them for protection.
Other pads and braces. Depending on their own preferences or past injuries, some volleyball players wear elbow or forearm pads, ankle or wrist braces, or thumb splints.
Shoes. Volleyball shoes have gummy rubber souls for better traction on gym floors. They also have extra padding to absorb shocks from all the running and jumping. Choose a pair that fits correctly, and keep them tied securely when you play.
Mouthguards. Mouthguards are a low-cost way to protect the teeth, lips, cheeks, and tongue. Players in all active sports should consider using mouthguards.
Goggles and sunglasses. If you wear glasses, consider getting prescription goggles for volleyball. If you play beach volleyball in the sun, wear shatterproof sunglasses to protect your eyes from the glare.
Athletic support. If you're a guy, you'll appreciate having a good athletic supporter when you're running around or jumping. Girls might consider wearing a good sports bra.