MBS Pro Tri-Pack Pads Specs: super durable 1200 denier nylon outer skin, comfortable 12, 14 and 18Mm eva foam padding Sizing Chart: XSmall = under 4'6 inches; Small = 4' 6 inches - 5'; Medium = 5' - 5'6 inches; Large = 5'7 inches - 6'; XLarge = 6'+ High-impact pp protective shells and splint, adjustable velcro straps Open back knee pad design allows you to put pads on without taking off shoes Pads should fit tight and not move around during a fall Specs: super durable 1200 denier nylon outer skin, comfortable 12, 14 and 18Mm eva foam padding Sizing Chart: 4 feet 6 inch or under = XS 4 feet 6 inch - 5 feet = S 5 feet - 5 feet 6 inch = M 5 feet 7 inch - 6 feet = L 6 feet + = XL High-impact pp protective shells and splint, adjustable velcro straps Open back knee pad design allows you to put pads on without taking off shoes Pads should fit tight and not move around during a fall