Lightweight plastic cups feature attractive, strength-enhancing sidewall ribbing. Embossed capacity marks enable quick, accurate and consistent fountain filling. Printable surface provides opportunities for custom branding and fill identification. High-quality polystyrene construction eliminates the potential for flavor and odor transfer. Smooth-rolled rims accommodate lid-free sipping. Leak-resistant, snap-tight lids (sold separately, unless otherwise noted). Horizontal Sidewall Ribbing. Cup Type: Cold Cup; Interior Volume Capacity: 9 oz; Material(s): Polystyrene (PS); Material Type: Plastic.