Mdevices Reinforced Silicone LMA Box of 10 - All Sizesm devices reinforced silicone disposable Laryngeal Masks Airways have a smooth one piece design with guide markings to enable an easy insertion and provide depth of positioning. The reinforced tubing reduces kinking and provides support during difficult intubations. The translucent tubing allows clear visibility and the soft seal cuff which is permeable to nitrous oxide, reduces pressure rises and minimises potential trauma.