Sip your favourite gin, tequila, whiskey & other spirits from these 100% lead-free crystal glasses. Place glass onto side and gently roll or spin like a top, to create a natural liquid motion increasing the nosing of aromas. Ideal for tasting up to 2 oz (60 ml). The Revolve Roll & Spin Spirits Glass features a captivating design with a rounded bottom and a specialized rolling base. Simply place the glass on a flat surface and give it a gentle spin, and watch as the glass elegantly rotates, showcasing the swirling motion of your drink.