Dynarex Drinking CupsDynarex Drinking Cups The Dynarex Drinking Cups are constructed of a flexible, yet durable plastic, that allows for repeated individual use while remaining effective as a disposable option. The Plastic Cups feature a ridged midline for an added grip, as well as a rolled lip for easy separation. Available in white, blue, mint green, mauve, lavender and traditional clear. Quantity per box: 50 Boxes per Case: 20