The All Star LG30WPRO System 7 adult leg guards are well ventilated, lightweight and strong professional leg guard. The plastic plates are thicker in select areas which take the most abuse, such as the knees and the shin plates have 10 ventilation ports with large breathable holes in the padding.The moldable plastic allows the player to squeeze and bend the shin plates to wrap around their legs how they like. If you like the shins to feel tight, then squeeze in the walls to bring them in. If you like them loose and more breathable, flex the shin plates outward.The padding is removable and machine washable and the knee pads incorporates Patella Plus d3o technology. This technology is an intelligent shock absorbing material which will help limit the constant abuse to catcher's knees.