For this module, the accessibility concerns are the alternative text for the image and the text used for the button. Normally, these concerns would be address separately, but because we made the entire module a link (hover over any part of the module and click to activate the button link), the accessibility concerns are eased a bit.
For this example, something as simple as "hanging backpacks" would be sufficient for the alternative text.
Given that the title and blurb are sufficiently descriptive, the button text, which normally would be consider ambiguous (learn more about what?), is fine. Again, we are allowed to use ambiguous text for the button only because the entire module is the link text.
Because the image includes text, you should use that text as the alternative text. However, you should avoid having the alternative text be the same as the text in the title or the blurb used in the module.
Note that the button text is this example is quite descriptive. Using descriptive text for buttons and links is always the best practice.