XS Scuba Deluxe Folding Slate. 

Features: 

• Great folding design
• Sturdy attachment clip
• Unique adjustable lead pencil
• Dimensions closed: 5.75” x 7.5”  (14.6 x 19 cm)
• Dimensions open:  10.75” x 7.5”  (27.3 x 19 cm)