Typhoon Youth Sirocco SmockThe Typhoon Junior Scirocco Smock is built using an extremely durable, waterproof and breathable 2. 5 layer fabric construction. The sleeve design limits ride up and improves freedom of movement while the neoprene hem with twin side adjusters ensures a tight and comfortable fit. The Scirocco also has fully adjustable PU neck and wrist closures to keep water out and a hook and loop neck closure system which makes it easy to open up for venting.