GRAMS28 157 Essential Sling - BlackMake a Statement The specially designed heavy duty buckle gives visual interest to the bag, accentuating its simple form with a masculine touch. With its timeless design and understated look, the 157 Essential Sling is both a wardrobe staple and an item that is sure to draw gazes. Always Within Reach The main compartment of the 157 Essential Sling has two zippers so that you can easily reach for your items, regardless of whether you are right or left