Package & Size - 3 useful sizes in 1 pack (10"*10", 12"*12", 12"*16") which allows you to clean wherever you want. The small size can easily wipe out the dust from details, fit in your pocket, eyeglass case or handbag. The medium size could be placed in your instrument case to keep the instrument clean after hard-practicing. The large size provides you to polish your instrument without leaving scratch or fingerprint on the instrument surface and is suitable for adults and children. | Premium Materials - The cloths were fabricated by soft, high-quality, lint-free synthetic microfiber material and engineered to trap dirt, dust and fingerprints as traditional cotton cloths cannot do. It gives you comfort and deluxe care while cleaning. | Washable & Reusable - Premium quality microfiber cloth can be reused after hand wash or even machine wash which shows its absorbency and durability to ensure the quality of your instruments. It has a longer lifespan when properly maintained to prevent secondary harm for environment. | Wide Application - Libretto Microfiber Polish Cloths are ideal for cleaning not only your beloved instruments such as Piano, Violin, Ukulele, Trumpet, Saxophone, Guitar, Flute, Trombone, Tuba, but any other kinds of surfaces like screens, glasses, electronics, smartphones, lap-tops, lenses, watches. | An Ideal Gift - Gifts are the most endearing thing one can receive and the Libretto Microfiber Polish Cloth is the ideal gift for anyone who owns an instrument. Needless to say, the gift box arrives with a stunningly designed outlook, making it a ready-made gift for your family or friends for holidays!