Rapha's Unisex Merino Knee Warmers are a key accessory for chilly starts or changeable weather and can help improve a rider’s performance in cold conditions. Rapha Merino Knee Warmers offer the natural performance properties of merino with Rapha’s characteristic styling.Made from a fabric developed exclusively by Rapha, these high-performance knee warmers combine the natural performance properties of merino wool with a degree of Lycra for stretch and durability. They provide insulation, are highly breathable and also transfer moisture effectively. The fabric is quick-drying so the knee warmers can be used in a variety of conditions. Exclusive, merino-blend fabric Flatlock stitching Rubber gripper Odour resistant Anti-bacterial Lightweight Soft and itch-free Breathable Insulating Quick-drying Discreet Rapha branding 97% super-fine New Zealand merino wool 3% Lycra SIZING: (Thigh circumference)Small: Less than 51cmMedium: 51-61cmLarge: Bigger than 61cm