Aquasonic 100 Non Sterile 5 Liter (175 Oz) Oxygen Regulators * Each side operates independently 8975 * Each side operates independently to allow easy movement through narrow spaces and greater stability while standing * Wrap around knee *Two stay pockets with removable movable stays * Reinforced patella for additional comfort and support * Black neoprene warmth and flexibility * Fits either knee * Maximum thigh circumference 24 * Latex Free * Includes 2 adjustable velcro straps * ORIGINAL BLUE * 5 Liter(175oz) Each * World Standard for Medical Ultrasound Transmission AQUASONIC 100 is the most widely used gel for diagnostic and therapeutic medical ultrasound * Recommended for all procedures where a viscous gel is required * Acoustically correct for the broad range of frequencies used * Completely aqueous will not stain clothing or damage transducers * Unique can't be copied formula is hypoallergenic bacteriostatic non sensitizing and non irritating * No formaldehyde * Not a spermicide * Used and recommended by leading manufacturers of medical ultrasound equipment worldwide *