- Official FIVB-approved referee card set for professional volleyball matches, featuring strict compliance with international standards

- Premium durable plastic construction with anti-glare matte finish for clear visibility in bright stadium lighting

- Precision-cut edges and reinforced corners resist bending or fraying during intense gameplay

- Vibrant high-contrast red/yellow color coding meets FIVB Powel series specifications

- Compact wallet-sized design (8.5x5.5cm) with smooth flip action for instant referee decisions

- Essential for tournament officials, coaches" training sessions, and competitive league matches

- Bulk packaging available for sports academies and event organizers with wholesale discounts