The Risan aneroid sphygmomanometer by Riester features a simple to use ergonomic design. It has a valve for air release that is operated through easy finger-tip controls & is best suited for left/right handed individuals. The connected tube is a plug-in at the top for an undisturbed handling. Risan is a high-quality sphygmomanometer that features latex free, nylon adult calibrated loop & hook fastener cuff. The attached cuff on the Riester Risan Aneroid Sphygmomanometer is made from nylon, particularly important for any patient who has a latex allergy. All Riester sphygmomanometers feature an easy to interpret aluminium, linear dial that begins at 0 mmHg to offer increased accuracy.