The DEG flute and piccolo lyre's sturdy ABS construction means it is durable as well as fully adjustable. Known as the Flutist's Friend, it satisfies the implications of its moniker on parade routes and playing fields all across the country. Eliminates glare, and has no sharp edges to catch on uniforms. The lyre's adjustable arm strap fits all players and uniforms. Spring-loaded clip holds windows for easy flipping. Includes 5 windows and 2 plastic rings.