School-specified size! This size is probably standard at certain elementary schools, but it's hard to find because it's not sold in stores. Handmade Perfect for elementary school music class. Features a lining, quilted construction, and easy Velcro closure. Designed to hold a keyboard harmonica, an A4 file, and sheet music. The fabric and strap are carefully selected. As these are handmade items, I can add a name for 300 yen! I've made these to order for professionals several times. There are two name options: 1️⃣ Printed on iron-on tape with a label maker, and reinforced with hand-stitched edges. 2️⃣ Printed on yellow frilly label maker ribbon and attached to the handle in a ring shape. Both options are discreet, making them a good choice for security.