A slip-on garment is a type of clothing that does not require any fastening, such as buttons or zippers. The term 'slip-on garment' can refer to a variety of different types of clothing, including tunics. A TUNIC is a loose-fitting garment that typically reaches the knees and has long sleeves. It is often made of lightweight fabric and is usually worn over other clothing. Tunics are popular in many cultures and have been worn since ancient times.