Blackout Technology eliminates glare so you never lose sight of the ball. Dual-Layer memory foam give you a comfortable and snug fit. 21 air vents help fight fatigue by keeping you cooler, longer. Ultra-light weight so you can run even faster. Meets NOCSAE performance standards for softball use only. This product is backed by RIP-IT"s exclusive "Love it or return it" policy. If you do not love your equipment, send it back to RIP-IT for a full refund within thirty days of purchase. RIP-IT will even pay for return shipping. Also included is RIP-IT"s industry leading 400 day warranty. Size is M/L.