St. Louis Blues Franklin NHL Full Size Street Extreme Youth Goalie Mask. Aegis Microbe Shield? Antimicrobial Protection. Anatomically designed ACD? vented shell. Molded high-impact ABS plastic. Full-coverage adjustable back plate with extended chin and jaw contoured design. Welded vinyl-coated steel cage and adjustable elasticized quick-snap straps. Recommended sizing for ages 5 to 9. Only for street hockey use with official size street hockey ball.