The 22in high by 26in wide shield is made of clear, durable Lexan polycarbonate. It is designed to effectively provide hearing protection to the musician stationed in front of other musicians, yet not causing impaired vision for the musician behind. The shield contracts and folds down to a height of 37in allowing it to be comfortably tucked away behind your chair when not needed. Also, the shield is equipped with a collapsible tripod base that makes it very portable and easily transported. The MANHASSET Acoustic Shield also has a 1 1/2in ledge, so it easily doubles as a fully-functioning music stand for directors or those desiring a larger music desk, yet not wanting to sacrifice visibility.