The Nike Mind 001 Old Royal HQ4309-400 listing shows a blue slip-on with a covered toe and a low, open heel entry. That shape matters before you reach the size selector: there are no laces to tighten across the foot and no strap to fasten behind it. Antsneakers sells UA replica footwear; the observations here concern this listing’s photos, rather than a tested retail pair.

A low rear rim leaves the heel entry open
From the side, the upper rises over the front of the foot and drops toward the back. The rear photograph makes the opening clearer. A blue rim surrounds the base of each heel entry, but there is no tall back panel or adjustable rear strap above it. The rim is part of the visible shape; its presence alone does not tell us how securely a particular foot will sit inside.
This is the first purchase decision for Old Royal. If you want a shoe with a fastening behind your heel, the pictured configuration does not provide one. If an open-back slip-on is what you are looking for, move on to the space beneath the upper and the usable length inside it.

The perforated top panel has no lace adjustment
The front three-quarter photograph shows a separate-looking blue panel across the top, with rows of small holes and a small reflective Swoosh. There are no visible eyelets or laces along its sides. The front of the shoe remains covered, so the opening is at the back rather than across the toes.
Do not treat that top panel as an adjustment mechanism simply because it occupies the area where a sneaker tongue often sits. The photograph cannot establish how far it stretches or how much room it leaves above your instep. A close view of the opening, with the packing paper removed, would be more useful for that question than another exterior side shot.

Choose the closure first, then establish the space inside
For this shape, ask about both usable footbed length and room beneath the top panel for the specific size you intend to order. Explain whether you plan to wear socks. A size label alone does not answer either question, and choosing a smaller size should not be assumed to solve heel movement.
Keep that enquiry tied to HQ4309-400 Old Royal so that any measurements or additional photographs refer to the same listing. The useful buying distinction is the combination visible here: a covered forefoot, a low rear rim and an upper without laces. Decide whether those features suit the way you want to put on and secure your footwear before comparing sizes.