With main compartment and front compartment and a power supply sleeve Shoulder pad and trolley strap. The Acer Notebook Carry Case is the must-have accessory for your 17.3” Acer notebook. The 17.3” notebook bag has enough room to store your notebook and your working documents. The additional sleeve can be used to store your power supply unit. The bag also has a shoulder pad and a strap so that it can be attached to a trolley.