These economical clear plastic cups are designed to fit standard communion cup trays and give you the clarity of real glass without the worry of breakage. The flared cup rim is designed for easy handling and the cup edge is smoothed to protect against discomfort to the lips. Each cup is 1 3⁄8" high and holds approximately 1⁄2 oz. of liquid. The 400 cup box contains 4 sleeves of 100 stacked cups. These plastic communion cups are top notch in the communion supply marketplace.