teenage engineering duty large bag, custom made to fit the OP-1 original or OP-1 field portable synthesizer and sequencer custom design – a durable bag with two sections: one to fit your OP-1 original or OP-1 field, the other to fit your accessories. dimensions: 32 cm x 12.5 cm x 1 cm / 12.59 in x 4.92 in x 0.39 in quality material – made from durable polyester ripstop with tpu coating, it's tear-resistant and water-repellent. closure fastened with velcro and handle made from recycled polyester webbing.