Easy sizing and fit. Your waterproof protector can be used on both the left and right arms and easily fits both men and women. Recommended and used extensively within the NHS and by healthcare professionals worldwide. Your LimbO is made here in the UK and is compliant with the highest quality standards. Simple and easy to use, your waterproof protector has a flexible seal and is completely self-supporting, allowing you to apply and remove the cover with ease. Ideal for keeping your dressing or cast dry - the LimbO Waterproof Protector utilises a reinforced neoprene seal which prevents water leakage, allowing you to bathe and shower with confidence. Adult Full Arm, 25-29 cm upper arm circumference - just measure the circumference on the thickest part of the upper arm. 69 cm length.