Size 9 is the selection to verify
Related listings advertise 9.5, 10.5 and 11 using the same photograph. Those entries help find a size; they do not establish four different safety designs. Because the brand is unspecified, keep the exact item identifier with any request for documentation. A generic chart for another black work boot is not a reliable substitute.
Inspect the front before changing the length
During a permitted fitting, distinguish the toe touching the cap end from pressure across the ball of the foot. The latter may persist even in a longer size. Also check the boot’s hold while taking ordinary short steps. Puncture-resistant and waterproof remain seller descriptions here, and the word indestructible does not create an exception to wear, damage or the need for employer-approved protection.