●Made from Silica gel, Softness and environmental friendly; No noise when dropped, and easy washable ●Total size: 58.2 x 38 x 20 mm(LxWxH) Inner width: 25.4 mm and 33 mm Inner height: 16 mm ●When you do not use the instrument, cover it prevent the dust falling on the it mouth, protects mouthpiece rail ●It fits for most part of mouthpieces(Clarinet, Saxophone, Baritone Sax), works with or without a reed affixed. Preserves reed moisture; ●Preserves reed moisture; Durable and easy to carry, small enough to fit; Package Content: 2 x Flute Mouthpiece Cap Protect