・ Refill for IST WR-5 Dolphin Tech Refillable Underwater Notebook

・ 25 waterproof, reusable pages

・ Hard plastic cover

・ Dimensions when open: 7” × 8” (17.5cm × 20.4cm)

・ Dimensions when closed: 7” × 4” (17.5cm × 10.2cm)