Compressport R2 Oxygen Calf Sleeves The lightest compression calf sleeve on the market, offering minimum weight and maximum support for the most extreme conditions. Developed as an ultra-lightweight version of their iconic R2v2, Compressport have made the R2 Oxygen with long distances and extreme conditions in mind. Weighing just 15g each, these calf sleeves are not only the lightest that Comprssport make but also the lightest on the market. Fast-drying mesh panels provide 360-degree ventilation whilst ultra-soft lightweight yarn gives a comfortable second-skin feel so you won't be distracted during your runs. Comfort and support are provided by ultra-thin fibres that are proven to retain all compression properties for optimum calf support. These comfortable fibres also help to limit muscle vibration and damage. Offering added comfort when needed, ventilation stripes on the back of the sleeve are gradually spaced to expand with your muscles as they swell during high-int